A BbGg x bbgg cross yields a phenotypic ratio of approximately 5 black eyes, green skin : 5 orange eyes, white skin : 1 black eyes, white skin : 1 orange eyes, green skin. Which of the following best explains these results?

A BbGg x bbgg cross yields a phenotypic ratio of approximately 5 black eyes, green skin : 5 orange eyes, white skin : 1 black eyes, white skin : 1 orange eyes, green skin. Which of the following best explains these results?

Mendel’s law of independent assortment is being violated
It takes about 30 doubling times for a cancer cell to form a tumor that is large enough to be felt through the skin with hands. Calculate how many months it would take for the cells to form a tumor that could be felt if the doubling rate is two months.

It takes about 30 doubling times for a cancer cell to form a tumor that is large enough to be felt through the skin with hands. Calculate how many months it would take for the cells to form a tumor that could be felt if the doubling rate is two months.

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When discussing homeostasis in body temperature, it is NOT true to state that the body responds to Select one: heat by stimulating sweat release. heat by constricting the blood vessels in the skin. cold by contracting the arrector pili muscles. cold by contracting skeletal muscles causing shivering. cold by rerouting blood away from the skin.

When discussing homeostasis in body temperature, it is NOT true to state that the body responds to Select one: heat by stimulating sweat release. heat by constricting the blood vessels in the skin. cold by contracting the arrector pili muscles. cold by contracting skeletal muscles causing shivering. cold by rerouting blood away from the skin.

When discussing homeostasis in body temperature, it is NOT true … Read More...
There is a term called “hydrotherapy” (http://en.wikipedia.org/wiki/Hydrotherapy), which states that cold water bath can reduce pain and improve health, especially immune function. Explain the possible benefits and possible problems of hydrotherapy with the information you learned.

There is a term called “hydrotherapy” (http://en.wikipedia.org/wiki/Hydrotherapy), which states that cold water bath can reduce pain and improve health, especially immune function. Explain the possible benefits and possible problems of hydrotherapy with the information you learned.

Hydrotherapy is the use of water to treat a disease … Read More...
In case the body have to stay in lower temperature for extended time period (more than 1 hour), how does the body regulate its response?

In case the body have to stay in lower temperature for extended time period (more than 1 hour), how does the body regulate its response?

Arterioles transporting blood to external capillaries beneath the surface of … Read More...
In case the body stay in lower temperature for short period (less than 20 minutes), explain how the body response to it.

In case the body stay in lower temperature for short period (less than 20 minutes), explain how the body response to it.

Sweat stops being formed. The minute muscles under the exterior … Read More...
Overview The human body can regulate its function responding to the change of its environment. Temperature is one of the factors which can modulate the body function. Refer to the related lectures and other resources; answer the followed questions (question 1-5 need at least 400 words together): Q1 In case of cold weather how does human body detect the coldness? Explain the signal detection, delivery, processing and involved cells, tissues and organs.

Overview The human body can regulate its function responding to the change of its environment. Temperature is one of the factors which can modulate the body function. Refer to the related lectures and other resources; answer the followed questions (question 1-5 need at least 400 words together): Q1 In case of cold weather how does human body detect the coldness? Explain the signal detection, delivery, processing and involved cells, tissues and organs.

  The chief brain mechanisms for heat regulation are established … Read More...
F7.10 The flame spread rate through porous solids increases with concurrent wind velocity. decreases with concurrent wind velocity. is independent of concurrent wind velocity. F7.11 Surface tension accelerates opposed-flow flame spread over liquid fuels. True False F7.12 Opposed-flow flame spread rates over a solid surface are typically much smaller than 1 mm/s. around 1mm/s. much greater than 1 mm/s. F7.13 Upward flame spread rate over a vertical surface is typically between 10 and 1000 mm/s. True False F7.14 The Steiner tunnel test described in ASTM standard E 84 is used to assess the fire performance of interior finish materials based on lateral flame spread over a vertical sample. True False F8.1 Describe the triad of fire growth. F8.2 Liquid pool fires reach steady burning conditions within seconds after ignition. True False F8.3 The heat of gasification of liquid fuels is typically less than 1 kJ/g. between 1 and 3 kJ/g. greater than 3 kJ/g. F8.4 The heat flux from the flame to the surface of real burning objects can usually be determined with sufficient accuracy so that reasonable burning rate predictions can be made. True False F8.5 The mass burning flux generally associated with extinction is 0.5 g/m2s. 5 g/m2s. 50 g/m2s. F8.6 The mass burning flux of a liquid pool fire is a function of only the pool diameter. only the fuel type. pool diameter and fuel type. F8.7 The energy release rate of real objects can be measured in an oxygen bomb calorimeter. an oxygen consumption calorimeter. a room/corner test. F8.8 The peak energy release rate of typical domestic upholstered furniture can be as high as 3000 kW. True False F8.9 Draw a typical curve of the mass burning flux of a char forming fuel as a function of time. F8.10 A fast fire as defined in NFPA 72B grows proportionally to t2 and reaches an energy release rate of 1 MW in 75 sec. 150 sec. 300 sec. F9.1 Air entrainment into turbulent pool fire flames is due to buoyancy. True False F9.2 The frequency of vortex shedding in turbulent pool fire flames increases with pool diameter. decreases with pool diameter. is independent of pool diameter. F9.3 The height of turbulent jet flames for a given fuel type and orifice size is independent of energy release rate. True False F9.4 The exit velocities of fuel vapors leaving a solid or liquid pool fire surface are responsible for entrainment of air in the plume. True False F9.5 The height of a turbulent pool fire flame is a function of only energy release rate. only pool diameter. energy release rate and pool diameter. F9.6 Turbulent pool fire flame heights fluctuate in time within a factor of 2. True False F9.7 The Q* value for jet fires is 102 or greater. 104 or greater. 106 or greater. F9.8 The temperature in the continuous flame region of moderate size turbulent pool fires is approximately 820°C. True False F9.9 The temperature at the maximum flame height of a turbulent pool fire flame is approximately 1200°C. 800°C. 300°C. F9.10 The adiabatic flame temperature of hydrocarbon fuels is 1700-2000°C. 2000-2300°C. 2300-2600°C. F10.1 The stoichiometric air to fuel mass ratio of hydrocarbon fuels is of the order of 1.5 g/g. 15 g/g. 150 g/g. F10.2 Give two examples of products of incomplete combustion that occur in fires. F10.3 Slight amounts of products of incomplete combustion are generated in overventilated fires. True False F10.4 The CO yield of a fire is a function of only the fuel involved. only the ventilation conditions. the fuel and the ventilation conditions. F10.5 A carboxyhemoglobin level of 40% in the blood is usually lethal. True (doubt) False F10.6 Carbon monoxide is the leading killer of people in fires. True False F10.7 HCN is a narcotic gas. an irritant gas. a fuel vapor. F10.8 The hazard to humans from narcotic gases is a function of only the concentration of the gas. only the duration of exposure. the product of concentration and duration of exposure. F10.9 The effects on lethality of CO, HCN, and reduced O2 are additive. True False F10.10 Irritant gases typically cause post-exposure fatalities. True False F10.11 Visibility through smoke improves with increasing optical density. True False F10.12 Heat stress occurs when the skin is exposed to a heat flux of 1 kW/m2. the skin reaches a temperature of 45°C. the body’s core temperature reaches 41°C.

F7.10 The flame spread rate through porous solids increases with concurrent wind velocity. decreases with concurrent wind velocity. is independent of concurrent wind velocity. F7.11 Surface tension accelerates opposed-flow flame spread over liquid fuels. True False F7.12 Opposed-flow flame spread rates over a solid surface are typically much smaller than 1 mm/s. around 1mm/s. much greater than 1 mm/s. F7.13 Upward flame spread rate over a vertical surface is typically between 10 and 1000 mm/s. True False F7.14 The Steiner tunnel test described in ASTM standard E 84 is used to assess the fire performance of interior finish materials based on lateral flame spread over a vertical sample. True False F8.1 Describe the triad of fire growth. F8.2 Liquid pool fires reach steady burning conditions within seconds after ignition. True False F8.3 The heat of gasification of liquid fuels is typically less than 1 kJ/g. between 1 and 3 kJ/g. greater than 3 kJ/g. F8.4 The heat flux from the flame to the surface of real burning objects can usually be determined with sufficient accuracy so that reasonable burning rate predictions can be made. True False F8.5 The mass burning flux generally associated with extinction is 0.5 g/m2s. 5 g/m2s. 50 g/m2s. F8.6 The mass burning flux of a liquid pool fire is a function of only the pool diameter. only the fuel type. pool diameter and fuel type. F8.7 The energy release rate of real objects can be measured in an oxygen bomb calorimeter. an oxygen consumption calorimeter. a room/corner test. F8.8 The peak energy release rate of typical domestic upholstered furniture can be as high as 3000 kW. True False F8.9 Draw a typical curve of the mass burning flux of a char forming fuel as a function of time. F8.10 A fast fire as defined in NFPA 72B grows proportionally to t2 and reaches an energy release rate of 1 MW in 75 sec. 150 sec. 300 sec. F9.1 Air entrainment into turbulent pool fire flames is due to buoyancy. True False F9.2 The frequency of vortex shedding in turbulent pool fire flames increases with pool diameter. decreases with pool diameter. is independent of pool diameter. F9.3 The height of turbulent jet flames for a given fuel type and orifice size is independent of energy release rate. True False F9.4 The exit velocities of fuel vapors leaving a solid or liquid pool fire surface are responsible for entrainment of air in the plume. True False F9.5 The height of a turbulent pool fire flame is a function of only energy release rate. only pool diameter. energy release rate and pool diameter. F9.6 Turbulent pool fire flame heights fluctuate in time within a factor of 2. True False F9.7 The Q* value for jet fires is 102 or greater. 104 or greater. 106 or greater. F9.8 The temperature in the continuous flame region of moderate size turbulent pool fires is approximately 820°C. True False F9.9 The temperature at the maximum flame height of a turbulent pool fire flame is approximately 1200°C. 800°C. 300°C. F9.10 The adiabatic flame temperature of hydrocarbon fuels is 1700-2000°C. 2000-2300°C. 2300-2600°C. F10.1 The stoichiometric air to fuel mass ratio of hydrocarbon fuels is of the order of 1.5 g/g. 15 g/g. 150 g/g. F10.2 Give two examples of products of incomplete combustion that occur in fires. F10.3 Slight amounts of products of incomplete combustion are generated in overventilated fires. True False F10.4 The CO yield of a fire is a function of only the fuel involved. only the ventilation conditions. the fuel and the ventilation conditions. F10.5 A carboxyhemoglobin level of 40% in the blood is usually lethal. True (doubt) False F10.6 Carbon monoxide is the leading killer of people in fires. True False F10.7 HCN is a narcotic gas. an irritant gas. a fuel vapor. F10.8 The hazard to humans from narcotic gases is a function of only the concentration of the gas. only the duration of exposure. the product of concentration and duration of exposure. F10.9 The effects on lethality of CO, HCN, and reduced O2 are additive. True False F10.10 Irritant gases typically cause post-exposure fatalities. True False F10.11 Visibility through smoke improves with increasing optical density. True False F10.12 Heat stress occurs when the skin is exposed to a heat flux of 1 kW/m2. the skin reaches a temperature of 45°C. the body’s core temperature reaches 41°C.

F7.10 The flame spread rate through porous solids increases with … Read More...
Which feature(s) helps distinguish the subcutaneous layer from the epidermis and dermis? Select one: The subcutaneous layer is composed of loose connective tissue and adipose tissue. The subcutaneous layer is composed of loose connective tissue and contains various sensory receptors. The epidermis is composed of loose connective tissue and adipose tissue. The subcutaneous layer is composed of fibrous connective tissue, such as collagen and elastic fibers. The subcutaneous layer contains melanocytes which will give skin its’ pigmentation. Feedback

Which feature(s) helps distinguish the subcutaneous layer from the epidermis and dermis? Select one: The subcutaneous layer is composed of loose connective tissue and adipose tissue. The subcutaneous layer is composed of loose connective tissue and contains various sensory receptors. The epidermis is composed of loose connective tissue and adipose tissue. The subcutaneous layer is composed of fibrous connective tissue, such as collagen and elastic fibers. The subcutaneous layer contains melanocytes which will give skin its’ pigmentation. Feedback

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A sunscreen product that contains vegetable fats Question 47 options: can be used with baby oil to protect against skin cancers is primarily designed to lubricate the skin will minimize tanning offers the most protection against sunburn

A sunscreen product that contains vegetable fats Question 47 options: can be used with baby oil to protect against skin cancers is primarily designed to lubricate the skin will minimize tanning offers the most protection against sunburn

A sunscreen product that contains vegetable fats Question 47 options: … Read More...