Question 1

Which type of tissue is responsible for secreting digestive enzymes?

Accepted Answer

A)  Connective 
B)  Epithelial 
C)  Matrix 
D)  Muscle 
E)  Nervous 
A)  Connective 
B)  Epithelial 
C)  Matrix 
D)  Muscle 
E)  Nervous

Question 2

The mechanism of heat production in brown fat depends on

Accepted Answer

A)  inefficient use of ATP in metabolism. 
B)  rapid breakdown of protein. 
C)  rapid breakdown of fatty acids. 
D)  the shivering of skeletal muscles. 
E)  uncoupling proton movement from ATP production. 
A)  inefficient use of ATP in metabolism. 
B)  rapid breakdown of protein. 
C)  rapid breakdown of fatty acids. 
D)  the shivering of skeletal muscles. 
E)  uncoupling proton movement from ATP production.

Question 3

Heterotherms differ from homotherms in that only heterotherms

Accepted Answer

A)  can regulate their own body temperature. 
B)  are animals whose body temperatures are determined primarily by external sources of heat. 
C)  maintain a constant body temperature at all times despite changes in outside temperature. 
D)  always have a negative Q10. 
E)  are animals that sometimes behave as an endotherm and at other times as an ectotherm. 
A)  can regulate their own body temperature. 
B)  are animals whose body temperatures are determined primarily by external sources of heat. 
C)  maintain a constant body temperature at all times despite changes in outside temperature. 
D)  always have a negative Q10. 
E)  are animals that sometimes behave as an endotherm and at other times as an ectotherm.

Question 4

When comparing relatively small mammals, such as mice and shrews, to large mammals, such as elephants and horses, the mice and shrews have

Accepted Answer

A)  higher basal metabolic rates. 
B)  more white fat. 
C)  lower average blood glucose levels. 
D)  less metabolically active tissues, such as skin and fat. 
E)  countercurrent heat exchange. 
A)  higher basal metabolic rates. 
B)  more white fat. 
C)  lower average blood glucose levels. 
D)  less metabolically active tissues, such as skin and fat. 
E)  countercurrent heat exchange.

Question 5

Which of the following is not a type of muscle tissue?

Accepted Answer

A)  Cardiac 
B)  Connective 
C)  Smooth 
D)  Skeletal 
E)  All of the above are types of muscle tissue. 
A)  Cardiac 
B)  Connective 
C)  Smooth 
D)  Skeletal 
E)  All of the above are types of muscle tissue.

Question 6

In the experiment graphed below, researchers heated and cooled the hypothalamus of a mammal and determined the metabolic rates at different environmental (ambient) temperatures. Based on this experiment, which of the following statements is true?

Accepted Answer

A)  The basal metabolic rate is higher at 5°C. 
B)  The basal metabolic rate is higher at 25°C. 
C)  The lower critical temperature is higher at 5°C. 
D)  The hypothalamic set point is increased by exposure to an ambient temperature of 25°C. 
E)  Both c and d 
A)  The basal metabolic rate is higher at 5°C. 
B)  The basal metabolic rate is higher at 25°C. 
C)  The lower critical temperature is higher at 5°C. 
D)  The hypothalamic set point is increased by exposure to an ambient temperature of 25°C. 
E)  Both c and d

Question 7

The most abundant protein in our bodies, called _______, is found in connective tissue.

Accepted Answer

The answer of The most abundant protein in our bodies,...

Question 8

In regulatory systems, the phenomenon of negative feedback

Accepted Answer

A)  is the least common type of feedback mechanism. 
B)  stimulates a return to set point. 
C)  amplifies a response. 
D)  disrupts homeostasis. 
E)  None of the above 
A)  is the least common type of feedback mechanism. 
B)  stimulates a return to set point. 
C)  amplifies a response. 
D)  disrupts homeostasis. 
E)  None of the above

Question 9

If the Q10 of the metabolic rate of an animal is 2, then

Accepted Answer

A)  the animal is better acclimatized to a cold environment than if its Q10 is 3. 
B)  the animal is an ectotherm. 
C)  the animal consumes half as much oxygen per hour at 20°C as it does at 30°C. 
D)  the animal's metabolic rate is not at basal levels. 
E)  the animal produces twice as much heat at 20°C as it does at 30°C. 
A)  the animal is better acclimatized to a cold environment than if its Q10 is 3. 
B)  the animal is an ectotherm. 
C)  the animal consumes half as much oxygen per hour at 20°C as it does at 30°C. 
D)  the animal's metabolic rate is not at basal levels. 
E)  the animal produces twice as much heat at 20°C as it does at 30°C.

Question 10

Environmental temperature influences the body temperature of many animals, especially those that live in _______ environments.

Accepted Answer

The answer of Environmental temperature influences the body temperature of...

Question 11

What is the biggest difference between a "cold" fish such as a trout and a "hot" fish such as a tuna?

Accepted Answer

A)  The temperature of the blood leaving the heart 
B)  The temperature of the blood entering the gills 
C)  The arrangement of blood vessels in the gills 
D)  The temperature of the brain 
E)  The volume of blood flowing in arteries just under the skin 
A)  The temperature of the blood leaving the heart 
B)  The temperature of the blood entering the gills 
C)  The arrangement of blood vessels in the gills 
D)  The temperature of the brain 
E)  The volume of blood flowing in arteries just under the skin

Question 12

You have measured the metabolism of the first animal in Question 1 at both low and high environmental temperatures. You find that the metabolic rate of the first animal in the question above is higher at 40°C than at 30°C. What physiological phenomenon would explain why the metabolic rate of this animal rises when the environmental temperature is above the upper critical limit?

Accepted Answer

An endotherm in a hot environment will a

Question 13

Which of the following animals are endotherms?

Accepted Answer

A)  Fishes 
B)  Amphibians 
C)  Birds 
D)  Mammals 
E)  Both c and d 
A)  Fishes 
B)  Amphibians 
C)  Birds 
D)  Mammals 
E)  Both c and d

Question 14

Animals have the ability to undergo acclimatization. Describe this process in relation to temperature regulation.

Accepted Answer

Animals undergo acclimatization in respo

Question 15

Which of the following Q10 values indicates that a reaction is not temperature sensitive?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  8 
E)  10 
A)  1 
B)  2 
C)  3 
D)  8 
E)  10

Question 16

On a hot day, an active dog will pant heavily and visit his water bowl frequently. Which of the following statements about the dog's condition or behavior is false?

Accepted Answer

A)  He is using evaporative cooling to lower core body temperature. 
B)  He is operating at a basal metabolic rate. 
C)  He is at the upper end of the thermoneutral zone. 
D)  He is sending more blood to his skin. 
E)  He is adjusting behavior in order to thermoregulate. 
A)  He is using evaporative cooling to lower core body temperature. 
B)  He is operating at a basal metabolic rate. 
C)  He is at the upper end of the thermoneutral zone. 
D)  He is sending more blood to his skin. 
E)  He is adjusting behavior in order to thermoregulate.

Question 17

Small endotherms can extend the period over which they can survive without food by dropping body temperature during the portion of the day or night when they would normally be inactive. This adaptive hypothermia is called _______.

Accepted Answer

The answer of Small endotherms can extend the period over...

Question 18

Which of the following terms is part of the thermal classification system for the range of strategies employed by animals?

Accepted Answer

A)  Warm-blooded 
B)  Homeothermic 
C)  Cold-blooded 
D)  Poikilothermic 
E)  Endothermic 
A)  Warm-blooded 
B)  Homeothermic 
C)  Cold-blooded 
D)  Poikilothermic 
E)  Endothermic

Question 19

The upper temperature limit at which cells can function is determined by the

Accepted Answer

A)  boiling point of water. 
B)  melting point of water. 
C)  melting point of fats. 
D)  denaturation point of nucleic acids. 
E)  denaturation point of proteins. 
A)  boiling point of water. 
B)  melting point of water. 
C)  melting point of fats. 
D)  denaturation point of nucleic acids. 
E)  denaturation point of proteins.

Question 20

Which of the following is an important characteristic of connective tissues?

Accepted Answer

A)  They generate electric signals. 
B)  They contract. 
C)  They provide both strength and elasticity. 
D)  They have secretory functions. 
E)  They cover the surface of the body and line the body cavities. 
A)  They generate electric signals. 
B)  They contract. 
C)  They provide both strength and elasticity. 
D)  They have secretory functions. 
E)  They cover the surface of the body and line the body cavities.

Exam 40: Physiology, Homeostasis, and Temperature Regulation

Which type of tissue is responsible for secreting digestive enzymes?

The mechanism of heat production in brown fat depends on

Heterotherms differ from homotherms in that only heterotherms

When comparing relatively small mammals, such as mice and shrews, to large mammals, such as elephants and horses, the mice and shrews have

Which of the following is not a type of muscle tissue?

In the experiment graphed below, researchers heated and cooled the hypothalamus of a mammal and determined the metabolic rates at different environmental (ambient) temperatures. Based on this experiment, which of the following statements is true?

The most abundant protein in our bodies, called _______, is found in connective tissue.

In regulatory systems, the phenomenon of negative feedback

If the Q10 of the metabolic rate of an animal is 2, then

Environmental temperature influences the body temperature of many animals, especially those that live in _______ environments.

What is the biggest difference between a "cold" fish such as a trout and a "hot" fish such as a tuna?

Which of the following animals are endotherms?

Animals have the ability to undergo acclimatization. Describe this process in relation to temperature regulation.

Which of the following Q10 values indicates that a reaction is not temperature sensitive?

On a hot day, an active dog will pant heavily and visit his water bowl frequently. Which of the following statements about the dog's condition or behavior is false?

Small endotherms can extend the period over which they can survive without food by dropping body temperature during the portion of the day or night when they would normally be inactive. This adaptive hypothermia is called _______.

Which of the following terms is part of the thermal classification system for the range of strategies employed by animals?

The upper temperature limit at which cells can function is determined by the

Which of the following is an important characteristic of connective tissues?

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

If the Q₁₀ of the metabolic rate of an animal is 2, then

Which of the following Q₁₀ values indicates that a reaction is not temperature sensitive?