Question 1

Most biological Q10 values are between _______ and _______.

Accepted Answer

A)  0; 1 
B)  1; 2 
C)  2; 3 
D)  2; 10 
E)  0; 40 
A)  0; 1 
B)  1; 2 
C)  2; 3 
D)  2; 10 
E)  0; 40

Question 2

Heat exchange between the internal environment and the skin occurs

Accepted Answer

A)  only in endotherms through evaporation. 
B)  by means of pore openings. 
C)  only in ectotherms through respiration. 
D)  only in the thermoneutral zone. 
E)  in both ectotherms and endotherms through blood flow. 
A)  only in endotherms through evaporation. 
B)  by means of pore openings. 
C)  only in ectotherms through respiration. 
D)  only in the thermoneutral zone. 
E)  in both ectotherms and endotherms through blood flow.

Question 3

Which of the following statements about nervous tissue is true?

Accepted Answer

A)  Neurons outnumber glial cells in our nervous system. 
B)  Glial cells generate and conduct electrochemical signals. 
C)  Cell bodies are long extensions of neurons over which impulses travel to reach other neurons. 
D)  Glial cells support and protect neurons. 
E)  Glial cells are a type of connective tissue holding neurons in place. 
A)  Neurons outnumber glial cells in our nervous system. 
B)  Glial cells generate and conduct electrochemical signals. 
C)  Cell bodies are long extensions of neurons over which impulses travel to reach other neurons. 
D)  Glial cells support and protect neurons. 
E)  Glial cells are a type of connective tissue holding neurons in place.

Question 4

Mammalian breast tissue is not normally producing milk; however, the act of a newborn suckling will stimulate oxytocin production, which will trigger the breast tissue to produce more milk. This is an example of

Accepted Answer

A)  feedforward information. 
B)  positive feedback. 
C)  negative feedback. 
D)  homeothermy. 
E)  heterothermy. 
A)  feedforward information. 
B)  positive feedback. 
C)  negative feedback. 
D)  homeothermy. 
E)  heterothermy.

Question 5

Use the following to answer questions :
Predict the probable metabolic response of a mam­mal exposed to a 3°-5°C environmental temperature change from the list below. 
-The environmental temperature begins at 0°C and increases above that point.

Accepted Answer

A)  Increased metabolic rate 
B)  Decreased metabolic rate 
C)  No change in metabolic rate 
D)  Death 
A)  Increased metabolic rate 
B)  Decreased metabolic rate 
C)  No change in metabolic rate 
D)  Death

Question 6

Having measured the metabolism of two animals of similar size at 15°C and 25°C, you find that the metabolic rate of Animal 1 is 115 ml of oxygen per hour at 15°C and 55 ml of oxygen per hour at 25°C. The metabolic rate of Animal 2 is 5.5 ml of oxygen per hour at 15°C and 11.5 ml of oxygen per hour at 25°C. Calculate the Q10 for the metabolic rate in both animals and determine if they are endotherms or ectotherms.

Accepted Answer

Metabolic rate can be calculated using

Question 7

Which of the following contributes to the proper maintenance of homeostasis in the bodies of animals?

Accepted Answer

A)  pH buffering of the blood 
B)  Control of blood flow to the skin 
C)  Production of hormones 
D)  Detection of external environmental conditions by the sensory system 
E)  All of the above 
A)  pH buffering of the blood 
B)  Control of blood flow to the skin 
C)  Production of hormones 
D)  Detection of external environmental conditions by the sensory system 
E)  All of the above

Question 8

A Q10 value of 3 indicates that a reaction rate has _______ over a temperature range of 10°C.

Accepted Answer

The answer of A Q10 value of 3 indicates that...

Question 9

Evaporative cooling is an effective way to increase heat loss, but it carries the physiological drawback of

Accepted Answer

A)  an increased use of ATP and substantial water loss. 
B)  the lowering of the hypothalamic thermal set point. 
C)  the decreased use of ATP and substantial water gain. 
D)  the exhaustion of the supply of brown fat. 
E)  a lowered basal metabolic rate. 
A)  an increased use of ATP and substantial water loss. 
B)  the lowering of the hypothalamic thermal set point. 
C)  the decreased use of ATP and substantial water gain. 
D)  the exhaustion of the supply of brown fat. 
E)  a lowered basal metabolic rate.

Question 10

Animals that can modulate their body temperature by generating metabolic heat are called _______.

Accepted Answer

The answer of Animals that can modulate their body temperature...

Question 11

Elephants use their ears to release heat to the environment. What mechanisms might they employ to increase heat loss from the ears?

Accepted Answer

A)  Increased convection by means of ear flapping 
B)  Moving into the sun 
C)  Increased blood flow to the ears 
D)  Covering their ears with dust 
E)  Both a and c 
A)  Increased convection by means of ear flapping 
B)  Moving into the sun 
C)  Increased blood flow to the ears 
D)  Covering their ears with dust 
E)  Both a and c

Question 12

Which of the following is not one of the thermoregulatory behaviors of a lizard (an ectotherm)?

Accepted Answer

A)  Staying in a burrow when the surface temperature is below 10°C 
B)  Basking in the sun during early morning hours 
C)  Moving into the shade during midday hours 
D)  Pressing its cool body to the ground during the midday hours 
E)  Consuming prey that is ectothermic 
A)  Staying in a burrow when the surface temperature is below 10°C 
B)  Basking in the sun during early morning hours 
C)  Moving into the shade during midday hours 
D)  Pressing its cool body to the ground during the midday hours 
E)  Consuming prey that is ectothermic

Question 13

Use the following to answer questions :
Predict the probable metabolic response of a mam­mal exposed to a 3°-5°C environmental temperature change from the list below. 
-The environmental temperature begins at the lower critical temperature and increases above that point.

Accepted Answer

A)  Increased metabolic rate 
B)  Decreased metabolic rate 
C)  No change in metabolic rate 
D)  Death 
A)  Increased metabolic rate 
B)  Decreased metabolic rate 
C)  No change in metabolic rate 
D)  Death

Question 14

What is the difference between negative feedback mechanisms and positive feedback mechanisms?

Accepted Answer

A)  Negative feedback mechanisms exist only in the circulatory system. 
B)  Negative feedback mechanisms return a system to a set point, and positive feedback mechanisms amplify a response. 
C)  Negative feedback mechanisms move a system away from a set point, and positive feedback mechanisms stabilize a system toward a set point. 
D)  Negative feedback mechanisms stabilize a system toward a set point, and positive feedback mechanisms reset the set point. 
E)  There is essentially no difference between the two feedback systems. 
A)  Negative feedback mechanisms exist only in the circulatory system. 
B)  Negative feedback mechanisms return a system to a set point, and positive feedback mechanisms amplify a response. 
C)  Negative feedback mechanisms move a system away from a set point, and positive feedback mechanisms stabilize a system toward a set point. 
D)  Negative feedback mechanisms stabilize a system toward a set point, and positive feedback mechanisms reset the set point. 
E)  There is essentially no difference between the two feedback systems.

Question 15

Anatomical features used by endotherms to reduce heat loss include

Accepted Answer

A)  rounder body shapes. 
B)  shorter appendages. 
C)  increased thermal insulation. 
D)  Both b and c 
E)  All of the above 
A)  rounder body shapes. 
B)  shorter appendages. 
C)  increased thermal insulation. 
D)  Both b and c 
E)  All of the above

Question 16

Use the following to answer questions :
Predict the probable metabolic response of a mam­mal exposed to a 3°-5°C environmental temperature change from the list below. 
-The environmental temperature begins at the lower critical temperature and decreases below that point.

Accepted Answer

A)  Increased metabolic rate 
B)  Decreased metabolic rate 
C)  No change in metabolic rate 
D)  Death 
A)  Increased metabolic rate 
B)  Decreased metabolic rate 
C)  No change in metabolic rate 
D)  Death

Question 17

In response to a 10°C rise in environmental temperature, an endotherm's body temperature will

Accepted Answer

A)  rise at a constant rate. 
B)  fall at a constant rate. 
C)  fall to a point, then become stable. 
D)  rise to a point, then become stable. 
E)  remain relatively constant. 
A)  rise at a constant rate. 
B)  fall at a constant rate. 
C)  fall to a point, then become stable. 
D)  rise to a point, then become stable. 
E)  remain relatively constant.

Question 18

"Hot" fish pick up their heat

Accepted Answer

A)  from brown fat. 
B)  by shivering. 
C)  by eating prey that live in warmer waters near the surface. 
D)  through metabolically active muscles. 
E)  by pressing against warm rocks in the intertidal zone. 
A)  from brown fat. 
B)  by shivering. 
C)  by eating prey that live in warmer waters near the surface. 
D)  through metabolically active muscles. 
E)  by pressing against warm rocks in the intertidal zone.

Question 19

Which of the following adaptations would not produce an increase in an ectotherm's body temperature?

Accepted Answer

A)  Repeated contraction of flight muscles without movement 
B)  Cluster or huddling behavior 
C)  Decreased surface-to-surface contact with a cold environment 
D)  Circulatory changes to maintain core or internal temperatures greater than the animal's peripheral temperatures 
E)  Metabolism of brown fat 
A)  Repeated contraction of flight muscles without movement 
B)  Cluster or huddling behavior 
C)  Decreased surface-to-surface contact with a cold environment 
D)  Circulatory changes to maintain core or internal temperatures greater than the animal's peripheral temperatures 
E)  Metabolism of brown fat

Question 20

Which of the following tissue type is involved in transport, secretion, and absorption?

Accepted Answer

A)  Nervous tissue 
B)  Epithelial tissue 
C)  Connective tissue 
D)  Muscle tissue 
E)  Liver tissue 
A)  Nervous tissue 
B)  Epithelial tissue 
C)  Connective tissue 
D)  Muscle tissue 
E)  Liver tissue

Exam 40: Physiology, Homeostasis, and Temperature Regulation

Most biological Q10 values are between _______ and _______.

Heat exchange between the internal environment and the skin occurs

Which of the following statements about nervous tissue is true?

Mammalian breast tissue is not normally producing milk; however, the act of a newborn suckling will stimulate oxytocin production, which will trigger the breast tissue to produce more milk. This is an example of

Use the following to answer questions : Predict the probable metabolic response of a mam­mal exposed to a 3°-5°C environmental temperature change from the list below. -The environmental temperature begins at 0°C and increases above that point.

Which of the following contributes to the proper maintenance of homeostasis in the bodies of animals?

A Q10 value of 3 indicates that a reaction rate has _______ over a temperature range of 10°C.

Evaporative cooling is an effective way to increase heat loss, but it carries the physiological drawback of

Animals that can modulate their body temperature by generating metabolic heat are called _______.

Elephants use their ears to release heat to the environment. What mechanisms might they employ to increase heat loss from the ears?

Which of the following is not one of the thermoregulatory behaviors of a lizard (an ectotherm)?

Use the following to answer questions : Predict the probable metabolic response of a mam­mal exposed to a 3°-5°C environmental temperature change from the list below. -The environmental temperature begins at the lower critical temperature and increases above that point.

What is the difference between negative feedback mechanisms and positive feedback mechanisms?

Anatomical features used by endotherms to reduce heat loss include

Use the following to answer questions : Predict the probable metabolic response of a mam­mal exposed to a 3°-5°C environmental temperature change from the list below. -The environmental temperature begins at the lower critical temperature and decreases below that point.

In response to a 10°C rise in environmental temperature, an endotherm's body temperature will

"Hot" fish pick up their heat

Which of the following adaptations would not produce an increase in an ectotherm's body temperature?

Which of the following tissue type is involved in transport, secretion, and absorption?

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Signaling and Communication

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinent Dna and Biotechnology

Differential Gene Expression in Development

Development and Evolutionary Change

Evidence and Mechanisms of Evolution

Reconstructing and Using Phylogenies

Species and Their Formation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria and Archaea: the Prokaryotic Domains

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Plant Nutrition

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Function

Musculoskeletal Systems

Gas Exchange in Animals

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen

Animal Behavior

Ecology and the Distribution of Life

Population Ecology

Species Interaction and Coevolution

Community Ecology

Ecosystems and Global Ecology

Conservation Biology

Filters

Most biological Q₁₀ values are between _ and _.

Use the following to answer questions : Predict the probable metabolic response of a mammal exposed to a 3°-5°C environmental temperature change from the list below. -The environmental temperature begins at 0°C and increases above that point.

A Q₁₀ value of 3 indicates that a reaction rate has _______ over a temperature range of 10°C.

Use the following to answer questions : Predict the probable metabolic response of a mammal exposed to a 3°-5°C environmental temperature change from the list below. -The environmental temperature begins at the lower critical temperature and increases above that point.

Use the following to answer questions : Predict the probable metabolic response of a mammal exposed to a 3°-5°C environmental temperature change from the list below. -The environmental temperature begins at the lower critical temperature and decreases below that point.