In the body, glucose is stored in the liver as Select one: a. starch. b. protein. c. glycogen. d. fat. e. amino acids.

In the body, glucose is stored in the liver as Select one: a. starch. b. protein. c. glycogen. d. fat. e. amino acids.

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Que 1: in women who suffer from migraine …………………. are classified menstrual migraines, which tend to be more severe and longer lasting . a) 5% – 10% b) 45% – 55% c) 20% – 50% d) 65%-75% Que 2: why are the women on average, slightly shorter than men a) They have fat then man which contributes to stature b) Their long bones are sealed and stop growing earlier than men c) Their brains are somewhat smaller than man’s brain d) Their brains are somewhat larger than man, brain que 3: menopause frequently occurs between ………………..age of year a) 25-30 b) 45-55 c) 35-40 d) 65-75 que 4: this hormone causes enlargement of the larynx and an increase in the length and thickness of the vocal cords. A) estrogen 2) cholesterol 3) progesterone 4) testosterone Que 5: the reproductive cycle includes which of the following interconnected sets of events a) Ovarian cycle b) Urinary cycle c) Placental cycle d) Female prostate cycle Que 6: high level of circulating progesterone have been associated with : a) Excessive milk production b) Ovarian cancer c) Inability to breast feed a new born child d) Pregnancy Que 7: although variations exist, ovulation typically occurs on the …………day before mensuaration a) 1st b) 14th c) 7th d) 28th Que 8: LH stimulates interstitial cells a) To decrease GnRH b) To produce FSH c) To produce testosterones d) To produce sperm Que 9:what region of the uterus is shed during menstration? a) Stratum basalis of the myometrium b) Stratum basalis of the endometrium c) Stratum functionalis of the endometrium d) Perimetrium Que 10: the phenomenon is which women living in close proximity tend to menstruate at approximately the time is called. a) Precocious puberty b) Menstrual synchrony’ c) Delayed puberty d) Ovarian synchrony Que 11.studies have shown that healthy menstruating women a) Should not participate in sports b) Often feel ill or weak when exercising c) Are able to safety engage in athletic activities d) Can contaminate others and should not engage in contacts sports. Que 12: which term below describes a chemical that resembles steroid hormones and posses threat to maintain homeostasis. a) Androgens b) Prostaglandins c) Endocrine disruptors d) All of the above Que 13: one of the primary function of ……….is preparing and sustaining the uterus of pregnancy a) Testosterone b) Progesterone c) Estradiol d) inhibin Que 14: typically ovulation occurs a) at the end of the uterine phase b) at the start of follicular phase c) during an increase of LH in the ovarian cycle d) at the middle of the luteal phase

Que 1: in women who suffer from migraine …………………. are classified menstrual migraines, which tend to be more severe and longer lasting . a) 5% – 10% b) 45% – 55% c) 20% – 50% d) 65%-75% Que 2: why are the women on average, slightly shorter than men a) They have fat then man which contributes to stature b) Their long bones are sealed and stop growing earlier than men c) Their brains are somewhat smaller than man’s brain d) Their brains are somewhat larger than man, brain que 3: menopause frequently occurs between ………………..age of year a) 25-30 b) 45-55 c) 35-40 d) 65-75 que 4: this hormone causes enlargement of the larynx and an increase in the length and thickness of the vocal cords. A) estrogen 2) cholesterol 3) progesterone 4) testosterone Que 5: the reproductive cycle includes which of the following interconnected sets of events a) Ovarian cycle b) Urinary cycle c) Placental cycle d) Female prostate cycle Que 6: high level of circulating progesterone have been associated with : a) Excessive milk production b) Ovarian cancer c) Inability to breast feed a new born child d) Pregnancy Que 7: although variations exist, ovulation typically occurs on the …………day before mensuaration a) 1st b) 14th c) 7th d) 28th Que 8: LH stimulates interstitial cells a) To decrease GnRH b) To produce FSH c) To produce testosterones d) To produce sperm Que 9:what region of the uterus is shed during menstration? a) Stratum basalis of the myometrium b) Stratum basalis of the endometrium c) Stratum functionalis of the endometrium d) Perimetrium Que 10: the phenomenon is which women living in close proximity tend to menstruate at approximately the time is called. a) Precocious puberty b) Menstrual synchrony’ c) Delayed puberty d) Ovarian synchrony Que 11.studies have shown that healthy menstruating women a) Should not participate in sports b) Often feel ill or weak when exercising c) Are able to safety engage in athletic activities d) Can contaminate others and should not engage in contacts sports. Que 12: which term below describes a chemical that resembles steroid hormones and posses threat to maintain homeostasis. a) Androgens b) Prostaglandins c) Endocrine disruptors d) All of the above Que 13: one of the primary function of ……….is preparing and sustaining the uterus of pregnancy a) Testosterone b) Progesterone c) Estradiol d) inhibin Que 14: typically ovulation occurs a) at the end of the uterine phase b) at the start of follicular phase c) during an increase of LH in the ovarian cycle d) at the middle of the luteal phase

Question 1 1. When males reach puberty, _________ increases their muscle mass and skeletal development. A. prolactin B. protein C. androgen D. adipose tissue E. estrogen 3 points Question 2 1. Which of the following is the only 100percent effective method of fertility control and STI protection? A. Abstinence B. Condoms and spermicide together C. Condoms and a hormonal contraceptive together D. Oral contraceptives E. Condoms 3 points Question 3 1. The efficacy rate for implants is less than ________ pregnancy per 100 users per year. A. 1 B. 10 C. 11 D. 17 E. 4 3 points Question 4 1. Over-the-counter medications are ________ A. sold legally without a prescription. B. safe for pregnant women to use. C. sold illegally without a prescription. D. the safest drugs for self-medication purposes. E. harmful even when approved by the pregnant women’s physician. 3 points Question 5 1. The ________ activates the autonomic nervous system and the endocrine system through messages sent via nerves or substances released into the bloodstream. A. cerebral cortex B. pons C. thalamus D. subcortex E. hypothalamus 3 points Question 6 1. Ovulation methods center around ______ A. a female’s basal body temperature. B. a female’s cervical secretions. C. a female tracking her menstrual cycle by using a calendar. D. A and B. E. A and C. 3 points Question 7 1. Emergency contraception ______ A. can be used as a regular contraception method. B. provides protection against STDs. C. is the only method available if unprotected intercourse has occurred when fertility is likely. D. is significantly more effective than other contraceptive methods. E. All of the above 3 points Question 8 1. Although a simultaneous orgasm between sexual partners is an exciting event, it _______ A. is a relatively uncommon event and can actually detract from the coital experience if one is preoccupied by sharing this experience. B. is common and should be a priority as far as coitus is concerned. C. is of no particular importance. D. is immensely overrated. E. None of the above 3 points Question 9 1. Cervical caps are similar to ________, but the cervical cap is smaller. A. IUDs B. diaphragms C. Norplant D. oral contraceptives E. Depo-Provera 3 points Question 10 1. Which of the following increases the risk of having a low-birth-weight baby? A. The mother does not eat well during pregnancy. B. The mother does not take care of herself. C. The mother does not receive comprehensive prenatal care. D. The mother smokes. E. All of the above 3 points Question 11 1. An advantage to using IUDs and IUSs is that they ______ A. remain in place, so planning before sexual intercourse is unnecessary. B. have a high level of effectiveness. C. allow fertility to return immediately after they are removed. D. can remain in place during a woman’s period. E. all of the above 3 points Question 12 1. Contraception is the means of preventing _______ from occurring during sexual intercourse. A. conception B. pain C. infertility D. STDs E. pleasure 3 points Question 13 1. ________ is the contraceptive method of removing the penis from the vagina before ejaculation. A. Abstinence B. Sterilization C. Avoidance D. Withdrawal E. Monogamy 3 points Question 14 1. Compared to men, women employed full time __________ A. spend fewer hours on household tasks. B. work more hours in the workplace. C. work a proportionate number of hours on household tasks. D. spend more hours on household tasks. E. work fewer hours in the workplace. 3 points Question 15 1. At ________, the female central nervous system (CNS) is typically more advanced than the male CNS. A. birth B. conception C. adolescence D. adulthood E. puberty 3 points Question 16 1. Females sometimes experience a sexual response cycle similar to that of males, EXCEPT A. when they are menstruating. B. they can have multiple orgasms without a refractory period. C. they can have multiple orgasms with a refractory period. D. the resolution phase is shorter in duration than in males. E. they generally move from excitement to plateau and then to orgasm. 3 points Question 17 1. Fertilization normally takes place in the ________ A. ovary. B. cervix. C. vagina. D. uterus. E. fallopian tubes. 3 points Question 18 1. ________ come in the form of foam, gels, films, suppositories, creams, sponges, and tablets. A. Condoms B. Diaphragms C. Spermicides D. IUDs E. Sterilization agents 3 points Question 19 1. The three major settings in the United States where labor and delivery occur are ________ A. the hospital, health-care clinics, and the home. B. the home, the hospital, and the birthing room. C. free-standing birth centers, the home, and health-care clinics. D. the hospital, the home, and free-standing birth centers. E. the birthing room, the hospital, and free-standing birth centers. 3 points Question 20 1. Mode, a fashion magazine, _______ A. was developed for women who wear normal and large sizes. B. was developed for women who wear over a size 16. C. shows only pictures of clothing, with no models. D. was sued by a group of women who claimed the magazine contributed to their bouts with eating disorders. E. none of the above 3 points Question 21 1. All of the following are advantages to breastfeeding EXCEPT that: A. over-the-counter medications do not affect breast milk. B. babies are less likely to contract respiratory infection. C. mothers’ milk provides antibodies against disease. D. encourages bonding of infant and mother. E. breast milk is cheaper than formula. 3 points Question 22 1. Kaplan’s Triphasic Model consists of the A. excitement, plateau, and resolution phases. B. desire, plateau, and orgasm phases. C. plateau, orgasm, and resolution phases. D. desire, excitement, and resolution phases. E. desire, excitement, and orgasm phases. 3 points Question 23 1. The unique component of Kaplan’s triphasic model is the ______phase—a psychological, prephysical sexual response stage. A. excitement B. desire C. resolution D. plateau E. None of the above 3 points Question 24 1. Together, the ________ and the ______ form the lifeline between the mother and the fetus. A. placenta, cervix B. cervix, uterus C. umbilical cord, vagina D. fallopiantubes, vagina E. placenta, umbilical cord 3 points Question 25 1. When an employee switches genders, which of the following is a difficult issue that employers may face? A. How clients might react B. How others will handle a transitioning employee using the restroom C. How an employee informs coworkers about switching genders D. All of the above E. None of the above 3 points Question 26 1. In men, sex flush occurs during the ________ phase, whereas in women it occurs during the ________ phase. A. refractory, excitement B. excitement, resolution C. excitement, plateau D. plateau, excitement E. plateau, resolution 3 points Question 27 1. The process that results in vaginal lubrication during the excitement phase is: A. myotonia. B. uterine orgasm. C. orgasmic platform. D. transudation. E. tachycardia. 3 points Question 28 1. The ________ is the waxy protective substance that coats the fetus. A. amniotic sac B. amniocentesis C. amniotic fluid D. vernixcaseosa. E. chorionic fluid 3 points Question 29 1. ________ adolescent females seem to be happier with their bodies and less likely to diet than ________ adolescent females. A. Hispanic, European Americans B. Asian American; African American C. African American, European American D. European American, Hispanic 3 points Question 30 1. Intrauterine devices (IUDs) and intrauterine systems (IUSs) are ______ methods of contraception. A. not B. permanent C. effective D. reversible E. both c and d 3 points Question 31 1. In early adolescence, girls outperform boys at which of the following types of tasks? A. Visual-spatial B. Math C. Physical D. Language and verbal E. None of the above 3 points Question 32 1. Which of the following are common signs that a person may have an eating disorder? A. The person wears tight clothes to show off his or her “new” body. B. A female may quit menstruating C. Excessive exercise D. B and C E. A and C 3 points Question 33 1. The ________ is the valve that prevents urine from entering the urethra and sperm from entering the bladder during ejaculation. A. orgasmic platform B. vasocongestive valve C. sex flush D. internal urethral sphincter E. None of the above 3 points Question 34 1. Which of the following statements reflect gender bias? A. Boys in school will “act out.” B. Girls in school will be docile. C. Girls are neat. D. All of the above. E. None of the above 3 points Question 35 1. The calendar method and ovulation methods are examples of ______ A. natural planning. B. fertility awareness methods. C. natural family planning. D. fertility planning. E. both B and C 3 points Question 36 1. Dieting during pregnancy can be harmful because the breakdown of fat produces toxic substances called ______ A. fibers. B. pheromones. C. ketones. D. monosaccharides. E. hormones. 3 points Question 37 1. Oral contraceptives _____ A. suppress ovulation. B. mimic the changes that occur in pregnancy. C. can be taken by both males and females. D. A and B E. A and C 3 points Question 38 1. According to Fisher (2001), men usually _______, whereas women ________. A. cut straight to the point, see issues as a part of a larger whole B. discuss their feelings, are more stoic C. mull things over, tend to speak their mind D. waiver while making decisions, mull things over E. None of the above 3 points Question 39 1. The increase in heart rate that occurs during sexual activity is known as _______ A. hyperventilation. B. vasocongestion. C. myotonia. D. tachycardia. E. sex flush. 3 points Question 40 1. Women earned about _________ of all college degrees in 2008. A. 10% B. 35% C. 57% D. 85% E. None of the above

Question 1 1. When males reach puberty, _________ increases their muscle mass and skeletal development. A. prolactin B. protein C. androgen D. adipose tissue E. estrogen 3 points Question 2 1. Which of the following is the only 100percent effective method of fertility control and STI protection? A. Abstinence B. Condoms and spermicide together C. Condoms and a hormonal contraceptive together D. Oral contraceptives E. Condoms 3 points Question 3 1. The efficacy rate for implants is less than ________ pregnancy per 100 users per year. A. 1 B. 10 C. 11 D. 17 E. 4 3 points Question 4 1. Over-the-counter medications are ________ A. sold legally without a prescription. B. safe for pregnant women to use. C. sold illegally without a prescription. D. the safest drugs for self-medication purposes. E. harmful even when approved by the pregnant women’s physician. 3 points Question 5 1. The ________ activates the autonomic nervous system and the endocrine system through messages sent via nerves or substances released into the bloodstream. A. cerebral cortex B. pons C. thalamus D. subcortex E. hypothalamus 3 points Question 6 1. Ovulation methods center around ______ A. a female’s basal body temperature. B. a female’s cervical secretions. C. a female tracking her menstrual cycle by using a calendar. D. A and B. E. A and C. 3 points Question 7 1. Emergency contraception ______ A. can be used as a regular contraception method. B. provides protection against STDs. C. is the only method available if unprotected intercourse has occurred when fertility is likely. D. is significantly more effective than other contraceptive methods. E. All of the above 3 points Question 8 1. Although a simultaneous orgasm between sexual partners is an exciting event, it _______ A. is a relatively uncommon event and can actually detract from the coital experience if one is preoccupied by sharing this experience. B. is common and should be a priority as far as coitus is concerned. C. is of no particular importance. D. is immensely overrated. E. None of the above 3 points Question 9 1. Cervical caps are similar to ________, but the cervical cap is smaller. A. IUDs B. diaphragms C. Norplant D. oral contraceptives E. Depo-Provera 3 points Question 10 1. Which of the following increases the risk of having a low-birth-weight baby? A. The mother does not eat well during pregnancy. B. The mother does not take care of herself. C. The mother does not receive comprehensive prenatal care. D. The mother smokes. E. All of the above 3 points Question 11 1. An advantage to using IUDs and IUSs is that they ______ A. remain in place, so planning before sexual intercourse is unnecessary. B. have a high level of effectiveness. C. allow fertility to return immediately after they are removed. D. can remain in place during a woman’s period. E. all of the above 3 points Question 12 1. Contraception is the means of preventing _______ from occurring during sexual intercourse. A. conception B. pain C. infertility D. STDs E. pleasure 3 points Question 13 1. ________ is the contraceptive method of removing the penis from the vagina before ejaculation. A. Abstinence B. Sterilization C. Avoidance D. Withdrawal E. Monogamy 3 points Question 14 1. Compared to men, women employed full time __________ A. spend fewer hours on household tasks. B. work more hours in the workplace. C. work a proportionate number of hours on household tasks. D. spend more hours on household tasks. E. work fewer hours in the workplace. 3 points Question 15 1. At ________, the female central nervous system (CNS) is typically more advanced than the male CNS. A. birth B. conception C. adolescence D. adulthood E. puberty 3 points Question 16 1. Females sometimes experience a sexual response cycle similar to that of males, EXCEPT A. when they are menstruating. B. they can have multiple orgasms without a refractory period. C. they can have multiple orgasms with a refractory period. D. the resolution phase is shorter in duration than in males. E. they generally move from excitement to plateau and then to orgasm. 3 points Question 17 1. Fertilization normally takes place in the ________ A. ovary. B. cervix. C. vagina. D. uterus. E. fallopian tubes. 3 points Question 18 1. ________ come in the form of foam, gels, films, suppositories, creams, sponges, and tablets. A. Condoms B. Diaphragms C. Spermicides D. IUDs E. Sterilization agents 3 points Question 19 1. The three major settings in the United States where labor and delivery occur are ________ A. the hospital, health-care clinics, and the home. B. the home, the hospital, and the birthing room. C. free-standing birth centers, the home, and health-care clinics. D. the hospital, the home, and free-standing birth centers. E. the birthing room, the hospital, and free-standing birth centers. 3 points Question 20 1. Mode, a fashion magazine, _______ A. was developed for women who wear normal and large sizes. B. was developed for women who wear over a size 16. C. shows only pictures of clothing, with no models. D. was sued by a group of women who claimed the magazine contributed to their bouts with eating disorders. E. none of the above 3 points Question 21 1. All of the following are advantages to breastfeeding EXCEPT that: A. over-the-counter medications do not affect breast milk. B. babies are less likely to contract respiratory infection. C. mothers’ milk provides antibodies against disease. D. encourages bonding of infant and mother. E. breast milk is cheaper than formula. 3 points Question 22 1. Kaplan’s Triphasic Model consists of the A. excitement, plateau, and resolution phases. B. desire, plateau, and orgasm phases. C. plateau, orgasm, and resolution phases. D. desire, excitement, and resolution phases. E. desire, excitement, and orgasm phases. 3 points Question 23 1. The unique component of Kaplan’s triphasic model is the ______phase—a psychological, prephysical sexual response stage. A. excitement B. desire C. resolution D. plateau E. None of the above 3 points Question 24 1. Together, the ________ and the ______ form the lifeline between the mother and the fetus. A. placenta, cervix B. cervix, uterus C. umbilical cord, vagina D. fallopiantubes, vagina E. placenta, umbilical cord 3 points Question 25 1. When an employee switches genders, which of the following is a difficult issue that employers may face? A. How clients might react B. How others will handle a transitioning employee using the restroom C. How an employee informs coworkers about switching genders D. All of the above E. None of the above 3 points Question 26 1. In men, sex flush occurs during the ________ phase, whereas in women it occurs during the ________ phase. A. refractory, excitement B. excitement, resolution C. excitement, plateau D. plateau, excitement E. plateau, resolution 3 points Question 27 1. The process that results in vaginal lubrication during the excitement phase is: A. myotonia. B. uterine orgasm. C. orgasmic platform. D. transudation. E. tachycardia. 3 points Question 28 1. The ________ is the waxy protective substance that coats the fetus. A. amniotic sac B. amniocentesis C. amniotic fluid D. vernixcaseosa. E. chorionic fluid 3 points Question 29 1. ________ adolescent females seem to be happier with their bodies and less likely to diet than ________ adolescent females. A. Hispanic, European Americans B. Asian American; African American C. African American, European American D. European American, Hispanic 3 points Question 30 1. Intrauterine devices (IUDs) and intrauterine systems (IUSs) are ______ methods of contraception. A. not B. permanent C. effective D. reversible E. both c and d 3 points Question 31 1. In early adolescence, girls outperform boys at which of the following types of tasks? A. Visual-spatial B. Math C. Physical D. Language and verbal E. None of the above 3 points Question 32 1. Which of the following are common signs that a person may have an eating disorder? A. The person wears tight clothes to show off his or her “new” body. B. A female may quit menstruating C. Excessive exercise D. B and C E. A and C 3 points Question 33 1. The ________ is the valve that prevents urine from entering the urethra and sperm from entering the bladder during ejaculation. A. orgasmic platform B. vasocongestive valve C. sex flush D. internal urethral sphincter E. None of the above 3 points Question 34 1. Which of the following statements reflect gender bias? A. Boys in school will “act out.” B. Girls in school will be docile. C. Girls are neat. D. All of the above. E. None of the above 3 points Question 35 1. The calendar method and ovulation methods are examples of ______ A. natural planning. B. fertility awareness methods. C. natural family planning. D. fertility planning. E. both B and C 3 points Question 36 1. Dieting during pregnancy can be harmful because the breakdown of fat produces toxic substances called ______ A. fibers. B. pheromones. C. ketones. D. monosaccharides. E. hormones. 3 points Question 37 1. Oral contraceptives _____ A. suppress ovulation. B. mimic the changes that occur in pregnancy. C. can be taken by both males and females. D. A and B E. A and C 3 points Question 38 1. According to Fisher (2001), men usually _______, whereas women ________. A. cut straight to the point, see issues as a part of a larger whole B. discuss their feelings, are more stoic C. mull things over, tend to speak their mind D. waiver while making decisions, mull things over E. None of the above 3 points Question 39 1. The increase in heart rate that occurs during sexual activity is known as _______ A. hyperventilation. B. vasocongestion. C. myotonia. D. tachycardia. E. sex flush. 3 points Question 40 1. Women earned about _________ of all college degrees in 2008. A. 10% B. 35% C. 57% D. 85% E. None of the above

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Why is breast milk considered to be superior to cow’s milk or formula for babies? Question 9 options: Proteins found in breast milk are more easily digested. Cow’s milk can cause allergic reactions. The fat content in breast milk is more easily digested. All of the above.

Why is breast milk considered to be superior to cow’s milk or formula for babies? Question 9 options: Proteins found in breast milk are more easily digested. Cow’s milk can cause allergic reactions. The fat content in breast milk is more easily digested. All of the above.

Why is breast milk considered to be superior to cow’s … Read More...
Chapter 03 Homework Due: 11:59pm on Friday, May 23, 2014 You will receive no credit for items you complete after the assignment is due. Grading Policy Components and Structure of the Atom Learning Goal: To specify the basic components of the atom and describe our modern conception of its structure. Part A The atom consists of three types of subatomic particles: protons, neutrons, and electrons. The electron is by far the lightest of the three, while the much heavier proton and neutron have masses very similar to each other. Two of the types of particles carry an electrical charge, while the third is neutral. Label the subatomic particles and appropriate charges by their relative locations. Identify the subatomic particles by dragging the appropriate labels to their respective targets. Hint 1. Which subatomic particles carry electric charge? Of the three subatomic particles, two carry equal but opposite charges. Select the two correct statements that match the subatomic particle with the appropriate charge. Check all that apply. ANSWER: Hint 2. Which subatomic particles are not found in the nucleus? Protons and electrons carry equal but opposite charges. Atomic nuclei are positively charged and are not composed of negatively charged particles. Which types of subatomic particles cannot be located within the nucleus? Select any that apply. ANSWER: ANSWER: The electron carries a positive charge. The proton carries a positive charge. The neutron carries a positive charge. The proton carries a negative charge. The electron carries a negative charge. The neutron carries a negative charge. neutrons electrons protons Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 1 of 14 5/21/2014 8:02 PM Correct This image represents the classical model of the atom proposed by Niels Bohr. Although this model has changed slightly as the result of modern scientific discoveries, it does help in understanding the relative locations of the subatomic particles in the atom. Notice that the protons and neutrons are bound in the nucleus, while the electrons are located in the space surrounding the nucleus. Part B Of the three types of subatomic particles, only neutrons do not carry charge. Protons carry a positive charge, and electrons carry a negative charge. Protons and neutrons are bound in the nucleus, while electrons orbit the nucleus. When the number of each type of subatomic particle in an atom changes, the characteristics defining the atom also change. Match the appropriate phrases with the type of subatomic particle that completes the defining characteristic. Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. Hint 1. What type of subatomic particle is lost or gained when an ion forms? For any atom of a given element to go from being neutral ( ) to being ionized ( ), what type of subatomic particle must be lost or gained? Select all that apply. ANSWER: Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 2 of 14 5/21/2014 8:02 PM Hint 2. What type of subatomic particle identifies an element? When identifying the element classification of a particular atom, which type of subatomic particle is used? ANSWER: ANSWER: Correct The number of each type of subatomic particle plays an important role in the characteristics of the atom. The general element classification (hydrogen, carbon, oxygen, etc.) is governed by the number of protons in the nucleus. If the number of protons changes in an atom, so does the type of element. The electrons are the only type of subatomic particle not in the nucleus. They orbit around the nucleus, bound by the electromagnetic force. When electrons are lost or gained by a neutral atom, the charge balance shifts, resulting in the atom becoming an ion. Ions can be either positive when electrons are lost or negative when electrons are gained. Part C In the classical view of the atom, Bohr pictured electrons orbiting the positively charged nucleus similar to how the planets orbit the Sun. While this picture was not entirely correct, it provides a good framework in which to make calculations about the energies of electrons. Different from the predictions of Newtonian mechanics, which allows any energy to be possible, Bohr described the electron orbits (now called orbitals) as having specific energies. Rank the following electron energy states according to their electron energies. Rank from highest to lowest energies. Hint 1. What are the definitions of orbital, ground state, and excited state? Define orbital, ground state, and excited state. loss of an electron loss of a proton loss of a neutron gain of an electron gain of a proton gain of a neutron electron proton neutron Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 3 of 14 5/21/2014 8:02 PM Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. ANSWER: Hint 2. How does the state change when an electron absorbs energy? Electrons can absorb energy either from light radiation or from collisions with other atoms. If an electron is in the first excited energy state and absorbs enough energy to go to the next higher energy state, into what state will the electron transition? ANSWER: ANSWER: the ground state the second excited state the third excited state Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 4 of 14 5/21/2014 8:02 PM Correct Excited states refer to the energy of an electron. The higher the state, the higher the energy of the electron. The electron energies of each orbital are fixed. The energy required for an electron to transition between each orbital is an exact value, corresponding to the difference between the orbital energies. Any energy more or less than these precise differences cannot be used by the electron to make a transition; only the energies equal to the full values can induce a transition. Part D The Bohr model accounted for most of the general characteristics of the atom. However, the modern model based on quantum mechanics explains that, although the energy of each orbital is fixed, the orbital radius is actually an average distance. The result is a “cloud” where the electron is most likely to be located. The following is an image of an atom of hydrogen, consisting of one proton, zero neutrons, and one electron. When an electron is excited to different energy levels, the radius from the nucleus also changes. Rank the following electron energy states according to the average distance of the electron from the nucleus. Rank from largest to smallest distances. Hint 1. What is the relationship between electron orbital distance and electron energy? Rank the following general electron energies from largest to smallest electron orbital distances. Rank from largest to smallest orbital distances. ANSWER: ANSWER: Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 5 of 14 5/21/2014 8:02 PM Correct Excited states refer to the energy state of an electron. The higher the state, the higher the energy and the greater the distance of the electron from the nucleus. Due to the attractive force between the negatively charged electron and the positively charged nucleus, the electron requires greater energies to overcome this attraction and achieve orbits at greater distances. Concept Review: The pH Scale Can you classify solutions as acidic, neutral, or basic? Part A Decide whether each label describes a solution that is acidic, neutral, or basic, and then drag it into the appropriate bin. ANSWER: Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 6 of 14 5/21/2014 8:02 PM Correct Activity: Carbohydrates Click here to complete this activity. Then answer the questions. Part A Glycogen is _____. ANSWER: Correct Animals store energy in the form of glycogen. a polysaccharide found in animals a source of saturated fat a polysaccharide found in plant cell walls the form in which plants store sugars a transport protein that carries oxygen Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 7 of 14 5/21/2014 8:02 PM Part B glucose + glucose —> _____ by _____. ANSWER: Correct Maltose is the disaccharide formed when two glucose molecules are linked by dehydration synthesis. Part C Which of these is a source of lactose? ANSWER: Correct Lactose is the sugar found in milk. Part D Which of these is a polysaccharide? ANSWER: Correct Cellulose is a carbohydrate composed of many monomers. Part E _____ is the most abundant organic compound on Earth. ANSWER: maltose + water … dehydration synthesis lactose + water … hydrolysis starch + water … dehydration synthesis sucrose + water … dehydration synthesis cellulose + water … hydrolysis potatoes sugar beets sugar cane starch milk sucrose lactose glucose galactose cellulose Cellulose Lactose Starch Glucose Glycogen Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 8 of 14 5/21/2014 8:02 PM Correct Cellulose, a component of plant cell walls, is the most abundant organic compound found on earth. Activity: Protein Structure Click here to complete this activity. Then answer the questions. Part A Proteins are polymers of _____. ANSWER: Correct Proteins are polymers of amino acids. Part B What type of bond joins the monomers in a protein’s primary structure? ANSWER: Correct The amino acids of a protein are linked by peptide bonds. Part C Which of these illustrates the secondary structure of a protein? ANSWER: nucleotides CH2O units glycerol hydrocarbons amino acids ionic hydrogen hydrophobic S—S peptide Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 9 of 14 5/21/2014 8:02 PM Correct Alpha helices and beta pleated sheets are characteristic of a protein’s secondary structure. Part D The secondary structure of a protein results from _____. ANSWER: Correct Electronegative oxygen and nitrogen atoms leave hydrogen atoms with partial positive charges. Part E Tertiary structure is NOT directly dependent on _____. ANSWER: bonds between sulfur atoms peptide bonds hydrogen bonds hydrophobic interactions ionic bonds hydrophobic interactions ionic bonds hydrogen bonds peptide bonds bonds between sulfur atoms Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 10 of 14 5/21/2014 8:02 PM Correct Peptide bonds link together the amino acids of a protein’s primary structure. Activity: Lipids Click here to complete this activity. Then answer the questions. Part A Which of these is NOT a lipid? ANSWER: Correct RNA is a nucleic acid Part B This figure is an example of a(n) _____. ANSWER: Correct The fatty acid tails lack double bonds. steroids phospholipid RNA cholesterol wax steroid unsaturated fat nucleic acid protein saturated fat Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 11 of 14 5/21/2014 8:02 PM Part C Which of these is a phospholipid? ANSWER: Correct Phospholipids are composed of a phosphate group, a glycerol, and fatty acids. Part D Which of these is rich in unsaturated fats? ANSWER: Correct Olive oil is a plant oil, and most plant oils are rich in unsaturated fats. Part E beef fat lard butter olive oil a fat that is solid at room temperature Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 12 of 14 5/21/2014 8:02 PM A function of cholesterol that does not harm health is its role _____. ANSWER: Correct Cholesterol is an important component of animal cell membranes. Concept Review: Types of Macromolecules Can you identify characteristics of proteins, nucleic acids, and carbohydrates? Part A Decide whether each label describes proteins, nucleic acids, or carbohydrates, and then drag it into the appropriate bin. ANSWER: Correct Concept Review: Earth’s Interior Layers Can you identify characteristics of Earth’s interior layers? Part A Drag the labels to the appropriate targets. ANSWER: as a component of animal cell membranes in calcium and phosphate metabolism All of cholesterol’s effects cause the body harm. as the most abundant male sex hormone as the primary female sex hormone Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 13 of 14 5/21/2014 8:02 PM Correct Score Summary: Your score on this assignment is 99.6%. You received 31.87 out of a possible total of 32 points. Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 14 of 14 5/21/2014 8:02 PM

Chapter 03 Homework Due: 11:59pm on Friday, May 23, 2014 You will receive no credit for items you complete after the assignment is due. Grading Policy Components and Structure of the Atom Learning Goal: To specify the basic components of the atom and describe our modern conception of its structure. Part A The atom consists of three types of subatomic particles: protons, neutrons, and electrons. The electron is by far the lightest of the three, while the much heavier proton and neutron have masses very similar to each other. Two of the types of particles carry an electrical charge, while the third is neutral. Label the subatomic particles and appropriate charges by their relative locations. Identify the subatomic particles by dragging the appropriate labels to their respective targets. Hint 1. Which subatomic particles carry electric charge? Of the three subatomic particles, two carry equal but opposite charges. Select the two correct statements that match the subatomic particle with the appropriate charge. Check all that apply. ANSWER: Hint 2. Which subatomic particles are not found in the nucleus? Protons and electrons carry equal but opposite charges. Atomic nuclei are positively charged and are not composed of negatively charged particles. Which types of subatomic particles cannot be located within the nucleus? Select any that apply. ANSWER: ANSWER: The electron carries a positive charge. The proton carries a positive charge. The neutron carries a positive charge. The proton carries a negative charge. The electron carries a negative charge. The neutron carries a negative charge. neutrons electrons protons Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 1 of 14 5/21/2014 8:02 PM Correct This image represents the classical model of the atom proposed by Niels Bohr. Although this model has changed slightly as the result of modern scientific discoveries, it does help in understanding the relative locations of the subatomic particles in the atom. Notice that the protons and neutrons are bound in the nucleus, while the electrons are located in the space surrounding the nucleus. Part B Of the three types of subatomic particles, only neutrons do not carry charge. Protons carry a positive charge, and electrons carry a negative charge. Protons and neutrons are bound in the nucleus, while electrons orbit the nucleus. When the number of each type of subatomic particle in an atom changes, the characteristics defining the atom also change. Match the appropriate phrases with the type of subatomic particle that completes the defining characteristic. Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. Hint 1. What type of subatomic particle is lost or gained when an ion forms? For any atom of a given element to go from being neutral ( ) to being ionized ( ), what type of subatomic particle must be lost or gained? Select all that apply. ANSWER: Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 2 of 14 5/21/2014 8:02 PM Hint 2. What type of subatomic particle identifies an element? When identifying the element classification of a particular atom, which type of subatomic particle is used? ANSWER: ANSWER: Correct The number of each type of subatomic particle plays an important role in the characteristics of the atom. The general element classification (hydrogen, carbon, oxygen, etc.) is governed by the number of protons in the nucleus. If the number of protons changes in an atom, so does the type of element. The electrons are the only type of subatomic particle not in the nucleus. They orbit around the nucleus, bound by the electromagnetic force. When electrons are lost or gained by a neutral atom, the charge balance shifts, resulting in the atom becoming an ion. Ions can be either positive when electrons are lost or negative when electrons are gained. Part C In the classical view of the atom, Bohr pictured electrons orbiting the positively charged nucleus similar to how the planets orbit the Sun. While this picture was not entirely correct, it provides a good framework in which to make calculations about the energies of electrons. Different from the predictions of Newtonian mechanics, which allows any energy to be possible, Bohr described the electron orbits (now called orbitals) as having specific energies. Rank the following electron energy states according to their electron energies. Rank from highest to lowest energies. Hint 1. What are the definitions of orbital, ground state, and excited state? Define orbital, ground state, and excited state. loss of an electron loss of a proton loss of a neutron gain of an electron gain of a proton gain of a neutron electron proton neutron Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 3 of 14 5/21/2014 8:02 PM Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. ANSWER: Hint 2. How does the state change when an electron absorbs energy? Electrons can absorb energy either from light radiation or from collisions with other atoms. If an electron is in the first excited energy state and absorbs enough energy to go to the next higher energy state, into what state will the electron transition? ANSWER: ANSWER: the ground state the second excited state the third excited state Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 4 of 14 5/21/2014 8:02 PM Correct Excited states refer to the energy of an electron. The higher the state, the higher the energy of the electron. The electron energies of each orbital are fixed. The energy required for an electron to transition between each orbital is an exact value, corresponding to the difference between the orbital energies. Any energy more or less than these precise differences cannot be used by the electron to make a transition; only the energies equal to the full values can induce a transition. Part D The Bohr model accounted for most of the general characteristics of the atom. However, the modern model based on quantum mechanics explains that, although the energy of each orbital is fixed, the orbital radius is actually an average distance. The result is a “cloud” where the electron is most likely to be located. The following is an image of an atom of hydrogen, consisting of one proton, zero neutrons, and one electron. When an electron is excited to different energy levels, the radius from the nucleus also changes. Rank the following electron energy states according to the average distance of the electron from the nucleus. Rank from largest to smallest distances. Hint 1. What is the relationship between electron orbital distance and electron energy? Rank the following general electron energies from largest to smallest electron orbital distances. Rank from largest to smallest orbital distances. ANSWER: ANSWER: Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 5 of 14 5/21/2014 8:02 PM Correct Excited states refer to the energy state of an electron. The higher the state, the higher the energy and the greater the distance of the electron from the nucleus. Due to the attractive force between the negatively charged electron and the positively charged nucleus, the electron requires greater energies to overcome this attraction and achieve orbits at greater distances. Concept Review: The pH Scale Can you classify solutions as acidic, neutral, or basic? Part A Decide whether each label describes a solution that is acidic, neutral, or basic, and then drag it into the appropriate bin. ANSWER: Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 6 of 14 5/21/2014 8:02 PM Correct Activity: Carbohydrates Click here to complete this activity. Then answer the questions. Part A Glycogen is _____. ANSWER: Correct Animals store energy in the form of glycogen. a polysaccharide found in animals a source of saturated fat a polysaccharide found in plant cell walls the form in which plants store sugars a transport protein that carries oxygen Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 7 of 14 5/21/2014 8:02 PM Part B glucose + glucose —> _____ by _____. ANSWER: Correct Maltose is the disaccharide formed when two glucose molecules are linked by dehydration synthesis. Part C Which of these is a source of lactose? ANSWER: Correct Lactose is the sugar found in milk. Part D Which of these is a polysaccharide? ANSWER: Correct Cellulose is a carbohydrate composed of many monomers. Part E _____ is the most abundant organic compound on Earth. ANSWER: maltose + water … dehydration synthesis lactose + water … hydrolysis starch + water … dehydration synthesis sucrose + water … dehydration synthesis cellulose + water … hydrolysis potatoes sugar beets sugar cane starch milk sucrose lactose glucose galactose cellulose Cellulose Lactose Starch Glucose Glycogen Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 8 of 14 5/21/2014 8:02 PM Correct Cellulose, a component of plant cell walls, is the most abundant organic compound found on earth. Activity: Protein Structure Click here to complete this activity. Then answer the questions. Part A Proteins are polymers of _____. ANSWER: Correct Proteins are polymers of amino acids. Part B What type of bond joins the monomers in a protein’s primary structure? ANSWER: Correct The amino acids of a protein are linked by peptide bonds. Part C Which of these illustrates the secondary structure of a protein? ANSWER: nucleotides CH2O units glycerol hydrocarbons amino acids ionic hydrogen hydrophobic S—S peptide Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 9 of 14 5/21/2014 8:02 PM Correct Alpha helices and beta pleated sheets are characteristic of a protein’s secondary structure. Part D The secondary structure of a protein results from _____. ANSWER: Correct Electronegative oxygen and nitrogen atoms leave hydrogen atoms with partial positive charges. Part E Tertiary structure is NOT directly dependent on _____. ANSWER: bonds between sulfur atoms peptide bonds hydrogen bonds hydrophobic interactions ionic bonds hydrophobic interactions ionic bonds hydrogen bonds peptide bonds bonds between sulfur atoms Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 10 of 14 5/21/2014 8:02 PM Correct Peptide bonds link together the amino acids of a protein’s primary structure. Activity: Lipids Click here to complete this activity. Then answer the questions. Part A Which of these is NOT a lipid? ANSWER: Correct RNA is a nucleic acid Part B This figure is an example of a(n) _____. ANSWER: Correct The fatty acid tails lack double bonds. steroids phospholipid RNA cholesterol wax steroid unsaturated fat nucleic acid protein saturated fat Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 11 of 14 5/21/2014 8:02 PM Part C Which of these is a phospholipid? ANSWER: Correct Phospholipids are composed of a phosphate group, a glycerol, and fatty acids. Part D Which of these is rich in unsaturated fats? ANSWER: Correct Olive oil is a plant oil, and most plant oils are rich in unsaturated fats. Part E beef fat lard butter olive oil a fat that is solid at room temperature Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 12 of 14 5/21/2014 8:02 PM A function of cholesterol that does not harm health is its role _____. ANSWER: Correct Cholesterol is an important component of animal cell membranes. Concept Review: Types of Macromolecules Can you identify characteristics of proteins, nucleic acids, and carbohydrates? Part A Decide whether each label describes proteins, nucleic acids, or carbohydrates, and then drag it into the appropriate bin. ANSWER: Correct Concept Review: Earth’s Interior Layers Can you identify characteristics of Earth’s interior layers? Part A Drag the labels to the appropriate targets. ANSWER: as a component of animal cell membranes in calcium and phosphate metabolism All of cholesterol’s effects cause the body harm. as the most abundant male sex hormone as the primary female sex hormone Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 13 of 14 5/21/2014 8:02 PM Correct Score Summary: Your score on this assignment is 99.6%. You received 31.87 out of a possible total of 32 points. Chapter 03 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 14 of 14 5/21/2014 8:02 PM

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Which of the following statements concerning unsaturated fats is correct? They are more common in animals They have no double bonds in the carbon chains of their fatty acids They are generally liquids at room temperature They contain more hydrogen than do saturated fats having the same number of carbon atoms They have fewer fatty acids per fat molecule than do saturated fats

Which of the following statements concerning unsaturated fats is correct? They are more common in animals They have no double bonds in the carbon chains of their fatty acids They are generally liquids at room temperature They contain more hydrogen than do saturated fats having the same number of carbon atoms They have fewer fatty acids per fat molecule than do saturated fats

Which of the following statements concerning unsaturated fats is correct? … Read More...
1. Which of the following accepts the electrons from the electron transfer chains durning aerobic respiration? A) carbon dioxide. B) Glucose. C)NADPH D) Oxygen. E) NADH 2. How many ATP are produced durning electron Transfer Phosphorylation? A) 2 B) 4 C) 32 D) 36 3. Which of the following substances result when a human muscle cells undergoes Anerobic respiration? A) Alcohol B) Acetyl Coa C)Lactose D) Oxygen 4. Durning Aerobic Respiration a hydrogen ion gradient forms and the hydrogen ions eventually flow through a protein called? A) Acetyl Coa B) ATP synthase C)Oxalocaetate D) NADH 5. Which of the following are components of a DNA nucleotide? A)Deoxyribose. B)Glucose C)Nitrogenous base D) Two of the above . E) Three of the above. 6. Which of the following best dsecribes the structure of DNA? A)Long and thin B) short and fat C) uniform diameter D)Highly variable E) Two of the above 7. When is Oxygen released? A) During the light dependent Reactions of photosynthesis B)During the light independent Reactions of photosynthesis C) During Anaerobic Respiration D) During Aerobic Respiration 8. During photosynthesis, which of the following are produced and then used in the manfacture of a sugar? A)ATP B)Oxygen C)NADPH D) Two of the above E) three of the above 9. Who is credited with the establishing the double stranded nature and model of DNA For which a Nobel Prize was awarded? A)Henrietta Lacks. B)Charles Drawin C)Mendel and Darwin D)Rosalind FRanklin E) Waston and Crick 10. Where are photosystems located? A)Inner mitochondrial membranes B)Outer mitochondrial membranes C)Thylakoid Membranes D)Storma E) Cytoplasm

1. Which of the following accepts the electrons from the electron transfer chains durning aerobic respiration? A) carbon dioxide. B) Glucose. C)NADPH D) Oxygen. E) NADH 2. How many ATP are produced durning electron Transfer Phosphorylation? A) 2 B) 4 C) 32 D) 36 3. Which of the following substances result when a human muscle cells undergoes Anerobic respiration? A) Alcohol B) Acetyl Coa C)Lactose D) Oxygen 4. Durning Aerobic Respiration a hydrogen ion gradient forms and the hydrogen ions eventually flow through a protein called? A) Acetyl Coa B) ATP synthase C)Oxalocaetate D) NADH 5. Which of the following are components of a DNA nucleotide? A)Deoxyribose. B)Glucose C)Nitrogenous base D) Two of the above . E) Three of the above. 6. Which of the following best dsecribes the structure of DNA? A)Long and thin B) short and fat C) uniform diameter D)Highly variable E) Two of the above 7. When is Oxygen released? A) During the light dependent Reactions of photosynthesis B)During the light independent Reactions of photosynthesis C) During Anaerobic Respiration D) During Aerobic Respiration 8. During photosynthesis, which of the following are produced and then used in the manfacture of a sugar? A)ATP B)Oxygen C)NADPH D) Two of the above E) three of the above 9. Who is credited with the establishing the double stranded nature and model of DNA For which a Nobel Prize was awarded? A)Henrietta Lacks. B)Charles Drawin C)Mendel and Darwin D)Rosalind FRanklin E) Waston and Crick 10. Where are photosystems located? A)Inner mitochondrial membranes B)Outer mitochondrial membranes C)Thylakoid Membranes D)Storma E) Cytoplasm

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Name Tutorials in Introductory Physics ©Pearson Custom Publishing McDermott, Shaffer, & P.E.G., U. Wash. Updated Preliminary Second Edition, 2011 Mech HW–39 1. A block initially at rest is given a quick push by a hand. The block slides across the floor, gradually slows down, and comes to rest. a. In the spaces provided, draw and label separate free-body diagrams for the block at each of the three instants shown. A quick push by a hand… 1. (Initially at rest) the sliding block slows… 2. v and is finally at rest. 3. b. Rank the magnitudes of all the horizontal forces in the diagram for instant 1. Explain. c. Are any of the forces that you drew for instant 1 missing from your diagram for instant 2? If so, for each force that is missing, explain how you knew to include the force on the first diagram but not on the second. d. Are any of the forces that you drew for instant 1 missing from your diagram for instant 3? If so, for each force that is missing, explain how you knew to include the force on the first diagram but not on the third. NEWTON’S SECOND AND THIRD LAWS Newton’s second and third laws Tutorials in Introductory Physics ©Pearson Custom Publishing McDermott, Shaffer, & P.E.G., U. Wash. Updated Preliminary Second Edition, 2011 Mech HW–40 2. Two crates, A and B, are in an elevator as shown. The mass of crate A is greater than the mass of crate B. a. The elevator moves downward at constant speed. i. How does the acceleration of crate A compare to that of crate B? Explain. ii. In the spaces provided below, draw and label separate free-body diagrams for the crates. Free-body diagram for crate A Free-body diagram for crate B iii. Rank the forces on the crates according to magnitude, from largest to smallest. Explain your reasoning, including how you used Newton’s second and third laws. iv. In the spaces provided at right, draw arrows to indicate the direction of the net force on each crate. If the net force on either crate is zero, state so explicitly. Explain. Is the magnitude of the net force on crate A greater than, less than, or equal to that on crate B? Explain. Elevator (moving down at constant speed) A B Cable Crate A Crate B Direction of net force Newton’s second and third laws Name Tutorials in Introductory Physics ©Pearson Custom Publishing McDermott, Shaffer, & P.E.G., U. Wash. Updated Preliminary Second Edition, 2011 Mech HW–41 b. As the elevator approaches its destination, its speed decreases. (It continues to move downward.) i. How does the acceleration of crate A compare to that of crate B? Explain. ii. In the spaces provided below, draw and label separate free-body diagrams for the crates in this case. Free-body diagram for crate A Free-body diagram for crate B iii. Rank the forces on the crates according to magnitude, from largest to smallest. Explain your reasoning, including how you used Newton’s second and third laws. iv. In the spaces provided at right, draw arrows to indicate the direction of the net force on each crate. If the net force on either crate is zero, state so explicitly. Explain. Is the magnitude of the net force on crate A greater than, less than, or equal to that on crate B? Explain. Crate A Crate B Direction of net force Newton’s second and third laws Tutorials in Introductory Physics ©Pearson Custom Publishing McDermott, Shaffer, & P.E.G., U. Wash. Updated Preliminary Second Edition, 2011 Mech HW–42 3. A hand pushes three identical bricks as shown. The bricks are moving to the left and speeding up. System A consists of two bricks stacked together. System B consists of a single brick. System C consists of all three bricks. There is friction between the bricks and the table. a. In the spaces provided at right, draw and label separate free-body diagrams for systems A and B. b. The vector representing the acceleration of system A is shown at right. Draw the acceleration vectors for systems B and C using the same scale. Explain. c. The vector representing the net force on system A is shown at right. Draw the net force vectors for systems B and C using the same scale. Explain. d. The vector representing the frictional force on system A is shown below. Draw the remaining force vectors using the same scale. NBH NAB NBA fAT fBT Explain how you knew to draw the force vectors as you did. A B Free-body diagram for system A Free-body diagram for system B Acceleration of A Acceleration of B Acceleration of C Net force on A Net force on B Net force on C

Name Tutorials in Introductory Physics ©Pearson Custom Publishing McDermott, Shaffer, & P.E.G., U. Wash. Updated Preliminary Second Edition, 2011 Mech HW–39 1. A block initially at rest is given a quick push by a hand. The block slides across the floor, gradually slows down, and comes to rest. a. In the spaces provided, draw and label separate free-body diagrams for the block at each of the three instants shown. A quick push by a hand… 1. (Initially at rest) the sliding block slows… 2. v and is finally at rest. 3. b. Rank the magnitudes of all the horizontal forces in the diagram for instant 1. Explain. c. Are any of the forces that you drew for instant 1 missing from your diagram for instant 2? If so, for each force that is missing, explain how you knew to include the force on the first diagram but not on the second. d. Are any of the forces that you drew for instant 1 missing from your diagram for instant 3? If so, for each force that is missing, explain how you knew to include the force on the first diagram but not on the third. NEWTON’S SECOND AND THIRD LAWS Newton’s second and third laws Tutorials in Introductory Physics ©Pearson Custom Publishing McDermott, Shaffer, & P.E.G., U. Wash. Updated Preliminary Second Edition, 2011 Mech HW–40 2. Two crates, A and B, are in an elevator as shown. The mass of crate A is greater than the mass of crate B. a. The elevator moves downward at constant speed. i. How does the acceleration of crate A compare to that of crate B? Explain. ii. In the spaces provided below, draw and label separate free-body diagrams for the crates. Free-body diagram for crate A Free-body diagram for crate B iii. Rank the forces on the crates according to magnitude, from largest to smallest. Explain your reasoning, including how you used Newton’s second and third laws. iv. In the spaces provided at right, draw arrows to indicate the direction of the net force on each crate. If the net force on either crate is zero, state so explicitly. Explain. Is the magnitude of the net force on crate A greater than, less than, or equal to that on crate B? Explain. Elevator (moving down at constant speed) A B Cable Crate A Crate B Direction of net force Newton’s second and third laws Name Tutorials in Introductory Physics ©Pearson Custom Publishing McDermott, Shaffer, & P.E.G., U. Wash. Updated Preliminary Second Edition, 2011 Mech HW–41 b. As the elevator approaches its destination, its speed decreases. (It continues to move downward.) i. How does the acceleration of crate A compare to that of crate B? Explain. ii. In the spaces provided below, draw and label separate free-body diagrams for the crates in this case. Free-body diagram for crate A Free-body diagram for crate B iii. Rank the forces on the crates according to magnitude, from largest to smallest. Explain your reasoning, including how you used Newton’s second and third laws. iv. In the spaces provided at right, draw arrows to indicate the direction of the net force on each crate. If the net force on either crate is zero, state so explicitly. Explain. Is the magnitude of the net force on crate A greater than, less than, or equal to that on crate B? Explain. Crate A Crate B Direction of net force Newton’s second and third laws Tutorials in Introductory Physics ©Pearson Custom Publishing McDermott, Shaffer, & P.E.G., U. Wash. Updated Preliminary Second Edition, 2011 Mech HW–42 3. A hand pushes three identical bricks as shown. The bricks are moving to the left and speeding up. System A consists of two bricks stacked together. System B consists of a single brick. System C consists of all three bricks. There is friction between the bricks and the table. a. In the spaces provided at right, draw and label separate free-body diagrams for systems A and B. b. The vector representing the acceleration of system A is shown at right. Draw the acceleration vectors for systems B and C using the same scale. Explain. c. The vector representing the net force on system A is shown at right. Draw the net force vectors for systems B and C using the same scale. Explain. d. The vector representing the frictional force on system A is shown below. Draw the remaining force vectors using the same scale. NBH NAB NBA fAT fBT Explain how you knew to draw the force vectors as you did. A B Free-body diagram for system A Free-body diagram for system B Acceleration of A Acceleration of B Acceleration of C Net force on A Net force on B Net force on C

Chronic stress and high cortisol levels Question 34 options: decrease fat deposition in the trunk and abdomen increase fat deposition in the trunk and abdomen decrease fat deposition in the thighs increase fat deposition in the thighs

Chronic stress and high cortisol levels Question 34 options: decrease fat deposition in the trunk and abdomen increase fat deposition in the trunk and abdomen decrease fat deposition in the thighs increase fat deposition in the thighs

Chronic stress and high cortisol levels Question 34 options: decrease … Read More...