Question 1

For reasons that are uncertain, hibernating animals periodically rewarm and recool during the hibernation period. It is thought that this is because

Accepted Answer

A)  they need to void wastes. 
B)  they need to eat a little to restore glycogen stores, especially in their brains. 
C)  they need to rewarm to activate their immune systems in case they've become infected. 
D)  two of these. 
E)  all of these. 
A)  they need to void wastes. 
B)  they need to eat a little to restore glycogen stores, especially in their brains. 
C)  they need to rewarm to activate their immune systems in case they've become infected. 
D)  two of these. 
E)  all of these.

Question 2

The ambient temperature at which metabolism increases to cope with heat loss to the environment is called the

Accepted Answer

A)  lower critical temperature. 
B)  critical neutral temperature. 
C)  upper critical temperature. 
A)  lower critical temperature. 
B)  critical neutral temperature. 
C)  upper critical temperature.

Question 3

Match each sentence with the most appropriate choice:
-Homeotherm

Accepted Answer

A)  hibernation 
B)  stomach 
C)  feathers 
D)  dark surface 
E)  variable body temperature
F) constant body temperature
G) high thermal conductivity
H) low thermal conductivity
I) heat exchange
J) endothermic animals 
A)  hibernation 
B)  stomach 
C)  feathers 
D)  dark surface 
E)  variable body temperature
F) constant body temperature
G) high thermal conductivity
H) low thermal conductivity
I) heat exchange
J) endothermic animals

Question 4

Obligatory diet-induced thermogenesis activity

Accepted Answer

A)  results from an increase in metabolic activity associated with processes occurring in the gut. 
B)  is the increase in heat production that occurs after a meal 
C)  has historically been studied in endotherms. 
D)  is affected by the amount of food an animal consumes. 
E)  all of these. 
A)  results from an increase in metabolic activity associated with processes occurring in the gut. 
B)  is the increase in heat production that occurs after a meal 
C)  has historically been studied in endotherms. 
D)  is affected by the amount of food an animal consumes. 
E)  all of these.

Question 5

The advantage of shivering over other forms of muscle activity (like running) as a means of thermogenesis is

Accepted Answer

A)  shivering increases ATP use and heat production without increasing heat loss due to convection. 
B)  with shivering all the energy expended is released as heat since no work is done. 
C)  shivering increases ATP use and heat production without increasing heat loss due to conduction. 
D)  shivering increases ATP use and heat production without increasing heat loss by either convection or conduction. 
E)  all of these. 
A)  shivering increases ATP use and heat production without increasing heat loss due to convection. 
B)  with shivering all the energy expended is released as heat since no work is done. 
C)  shivering increases ATP use and heat production without increasing heat loss due to conduction. 
D)  shivering increases ATP use and heat production without increasing heat loss by either convection or conduction. 
E)  all of these.

Question 6

When elephants get hot, they flap their ears. This works nicely as a mechanism for heat loss because

Accepted Answer

A)  the large surface to volume ratio of the ear favors loss of heat to the environment. 
B)  the flapping favors heat loss by conduction. 
C)  the flapping favors heat loss by convection. 
D)  the flapping favors heat loss by evaporation. 
E)  all of these. 
A)  the large surface to volume ratio of the ear favors loss of heat to the environment. 
B)  the flapping favors heat loss by conduction. 
C)  the flapping favors heat loss by convection. 
D)  the flapping favors heat loss by evaporation. 
E)  all of these.

Question 7

Based on your knowledge of the chemical structure of carbohydrates and fats, explain why the respiratory quotient (ratio of the volume of CO2 produced per volume O2 consumed) is higher for the former than the latter.

Accepted Answer

The respiratory quotient (RQ) is the rat

Question 8

The joule is the international unit for one calorie.

Accepted Answer

A) True 
 B)False

Question 9

Match each sentence with the most appropriate choice:
-Heat retention

Accepted Answer

A)  hibernation 
B)  stomach 
C)  feathers 
D)  dark surface 
E)  variable body temperature
F) constant body temperature
G) high thermal conductivity
H) low thermal conductivity
I) heat exchange
J) endothermic animals 
A)  hibernation 
B)  stomach 
C)  feathers 
D)  dark surface 
E)  variable body temperature
F) constant body temperature
G) high thermal conductivity
H) low thermal conductivity
I) heat exchange
J) endothermic animals

Question 10

For running mammals

Accepted Answer

A)  the increase in metabolism is roughly linear with velocity. 
B)  the increase in metabolism is inversely related to velocity. 
C)  the increase in metabolic rate is independent of velocity. 
A)  the increase in metabolism is roughly linear with velocity. 
B)  the increase in metabolism is inversely related to velocity. 
C)  the increase in metabolic rate is independent of velocity.

Question 11

Naked mole rats are unusual mammals that

Accepted Answer

A)  have no hair. 
B)  produce young parthenogenically. 
C)  don't nurse their young. 
D)  are ectothermic. 
E)  don't regulate body mass. 
A)  have no hair. 
B)  produce young parthenogenically. 
C)  don't nurse their young. 
D)  are ectothermic. 
E)  don't regulate body mass.

Question 12

Animals that practice freeze avoidance have antifreeze proteins which

Accepted Answer

A)  lower the freezing point of plasma due to their colligative properties. 
B)  raise the melting point of plasma ice due to their colligative properties. 
C)  nucleate the formation of ice crystals in the extracellular fluid. 
D)  interact with ice crystals to prevent their growth. 
E)  none of these. 
A)  lower the freezing point of plasma due to their colligative properties. 
B)  raise the melting point of plasma ice due to their colligative properties. 
C)  nucleate the formation of ice crystals in the extracellular fluid. 
D)  interact with ice crystals to prevent their growth. 
E)  none of these.

Question 13

Match each sentence with the most appropriate choice:
-Air

Accepted Answer

A)  hibernation 
B)  stomach 
C)  feathers 
D)  dark surface 
E)  variable body temperature
F) constant body temperature
G) high thermal conductivity
H) low thermal conductivity
I) heat exchange
J) endothermic animals 
A)  hibernation 
B)  stomach 
C)  feathers 
D)  dark surface 
E)  variable body temperature
F) constant body temperature
G) high thermal conductivity
H) low thermal conductivity
I) heat exchange
J) endothermic animals

Question 14

Some ecotherms survive freezing despite the fact that as much as _______ of their body water freezes.

Accepted Answer

A)  25% 
B)  45% 
C)  50% 
D)  65% 
E)  80% 
A)  25% 
B)  45% 
C)  50% 
D)  65% 
E)  80%

Question 15

Uncoupling proteins function in maintaining long-term neutral energy balance by

Accepted Answer

A)  uncoupling electron transport in mitochondria from ATP production. 
B)  uncoupling glycolysis from ATP production. 
C)  uncoupling food intake from nutrient uptake in the gut. 
D)  all of these. 
E)  none of these. 
A)  uncoupling electron transport in mitochondria from ATP production. 
B)  uncoupling glycolysis from ATP production. 
C)  uncoupling food intake from nutrient uptake in the gut. 
D)  all of these. 
E)  none of these.

Question 16

Heat shock proteins

Accepted Answer

A)  are also known as stress proteins. 
B)  are hydrophobic proteins. 
C)  are attracted to hydrophobic amino acids normally located on the inside of folded proteins. 
D)  are also called molecular chaperones. 
E)  all of these. 
A)  are also known as stress proteins. 
B)  are hydrophobic proteins. 
C)  are attracted to hydrophobic amino acids normally located on the inside of folded proteins. 
D)  are also called molecular chaperones. 
E)  all of these.

Question 17

Cryoprotective dehydration allows cells to freeze without ice crystal buildup inside the
 cells.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following has the highest rate of energy expenditure?

Accepted Answer

A)  sexual intercourse 
B)  bicycling on a level surface 
C)  swimming 
D)  jogging 
E)  walking up stairs 
A)  sexual intercourse 
B)  bicycling on a level surface 
C)  swimming 
D)  jogging 
E)  walking up stairs

Question 19

Which of the following animals would you expect to have the most unsaturated fatty acyl chains in the plasma membranes of its cells?

Accepted Answer

A)  arctic fish 
B)  penguins 
C)  polar bears 
D)  tropical fish 
E)  pelicans 
A)  arctic fish 
B)  penguins 
C)  polar bears 
D)  tropical fish 
E)  pelicans

Question 20

The membranes of a warm-adapted organism generally contain saturated fatty acids.

Accepted Answer

A) True 
 B)False

For reasons that are uncertain, hibernating animals periodically rewarm and recool during the hibernation period. It is thought that this is because

The ambient temperature at which metabolism increases to cope with heat loss to the environment is called the

Match each sentence with the most appropriate choice: -Homeotherm

Obligatory diet-induced thermogenesis activity

The advantage of shivering over other forms of muscle activity (like running) as a means of thermogenesis is

When elephants get hot, they flap their ears. This works nicely as a mechanism for heat loss because

Based on your knowledge of the chemical structure of carbohydrates and fats, explain why the respiratory quotient (ratio of the volume of CO₂ produced per volume O₂ consumed) is higher for the former than the latter.

The joule is the international unit for one calorie.

Match each sentence with the most appropriate choice: -Heat retention

For running mammals

Naked mole rats are unusual mammals that

Animals that practice freeze avoidance have antifreeze proteins which

Match each sentence with the most appropriate choice: -Air

Some ecotherms survive freezing despite the fact that as much as _______ of their body water freezes.

Uncoupling proteins function in maintaining long-term neutral energy balance by

Heat shock proteins

Cryoprotective dehydration allows cells to freeze without ice crystal buildup inside the cells.

Which of the following has the highest rate of energy expenditure?

Which of the following animals would you expect to have the most unsaturated fatty acyl chains in the plasma membranes of its cells?

The membranes of a warm-adapted organism generally contain saturated fatty acids.

Homeostasis and Integration: The Foundations of Physiology

Cellular and Molecular Physiology

Membrane Physiology

Neuronal Physiology

Nervous Systems

Sensory Physiology

Endocrine Systems

Muscle Physiology

Circulatory Systems

Defense Systems

Respiratory Systems

Excretory Systems

Fluid and Acid-Base Balance

Digestive Systems

Reproductive Systems

Filters

Exam 15: Energy Balance and Thermal Physiology

For reasons that are uncertain, hibernating animals periodically rewarm and recool during the hibernation period. It is thought that this is because

The ambient temperature at which metabolism increases to cope with heat loss to the environment is called the

Match each sentence with the most appropriate choice: -Homeotherm

Obligatory diet-induced thermogenesis activity

The advantage of shivering over other forms of muscle activity (like running) as a means of thermogenesis is

When elephants get hot, they flap their ears. This works nicely as a mechanism for heat loss because

Based on your knowledge of the chemical structure of carbohydrates and fats, explain why the respiratory quotient (ratio of the volume of CO2 produced per volume O2 consumed) is higher for the former than the latter.

The joule is the international unit for one calorie.

Match each sentence with the most appropriate choice: -Heat retention

For running mammals

Naked mole rats are unusual mammals that

Animals that practice freeze avoidance have antifreeze proteins which

Match each sentence with the most appropriate choice: -Air

Some ecotherms survive freezing despite the fact that as much as _______ of their body water freezes.

Uncoupling proteins function in maintaining long-term neutral energy balance by

Heat shock proteins

Cryoprotective dehydration allows cells to freeze without ice crystal buildup inside the cells.

Which of the following has the highest rate of energy expenditure?

Which of the following animals would you expect to have the most unsaturated fatty acyl chains in the plasma membranes of its cells?

The membranes of a warm-adapted organism generally contain saturated fatty acids.

Homeostasis and Integration: The Foundations of Physiology

Cellular and Molecular Physiology

Membrane Physiology

Neuronal Physiology

Nervous Systems

Sensory Physiology

Endocrine Systems

Muscle Physiology

Circulatory Systems

Defense Systems

Respiratory Systems

Excretory Systems

Fluid and Acid-Base Balance

Digestive Systems

Reproductive Systems

Filters

Based on your knowledge of the chemical structure of carbohydrates and fats, explain why the respiratory quotient (ratio of the volume of CO₂ produced per volume O₂ consumed) is higher for the former than the latter.