Question 1

Which of the following best explains why multicellular animals require specialized cells and tissues for internal transport and exchange?

Accepted Answer

Because their surface area to volume ratio decreases as size increases, limiting direct exchange with the environment.

Question 2

Which tissue type is primarily responsible for transmitting electrical impulses throughout the body?

Accepted Answer

Nervous tissue

Question 3

A rabbit's large ears help it regulate body temperature in hot environments. Which thermoregulatory adaptation is this an example of?

Accepted Answer

Circulatory adaptation

Question 4

Which of the following best describes the relationship between metabolic rate and body size in mammals?

Accepted Answer

Smaller mammals have a higher mass-specific metabolic rate than larger mammals.

Question 5

Which of the following equations correctly represents the surface area and volume of a cube with side length $$l$$?

Accepted Answer

Surface area: $$6l^2$$, Volume: $$l^3$$

Question 6

Which of the following is NOT a function of epithelial tissue?

Accepted Answer

Transmitting electrical impulses

Question 7

A penguin, a seal, and a tuna all have streamlined bodies for efficient swimming. This is an example of:

Accepted Answer

Evolutionary convergence

Question 8

Which of the following best describes countercurrent exchange in animal physiology?

Accepted Answer

It is the transfer of heat or solutes between fluids flowing in opposite directions, maximizing exchange efficiency.

Question 9

Which of the following is an example of negative feedback in homeostasis?

Accepted Answer

Shivering to increase body temperature when cold

Question 10

Which of the following statements about endotherms and ectotherms is correct?

Accepted Answer

Endotherms can remain active over a wider range of environmental temperatures than ectotherms.

Question 11

Which of the following best explains why flat or thin animals can rely on diffusion for exchange with the environment, while complex animals cannot?

Accepted Answer

Flat or thin animals have a high surface area to volume ratio, allowing efficient diffusion.

Question 12

Which of the following is a correct pairing of connective tissue type and its function?

Accepted Answer

Dense connective tissue: connects muscles to bones

Question 13

Which of the following is a real-life example of behavioral thermoregulation?

Accepted Answer

A lizard basking on a rock to absorb heat from the sun

Question 14

Which of the following best describes the function of brown fat in mammals?

Accepted Answer

It generates heat through nonshivering thermogenesis.

Question 15

Which of the following is a correct statement about the hierarchical organization of animal bodies?

Accepted Answer

Tissues are groups of similar cells that perform a specific function.

Question 16

Which of the following is an example of a set point changing due to circadian rhythm?

Accepted Answer

Body temperature rising during the day and falling at night

Question 17

Which of the following best explains why aquatic animals are often ectotherms?

Accepted Answer

Water is a good conductor of heat, making it difficult for animals to maintain a higher internal temperature than the environment.

Question 18

Which of the following is a correct description of torpor?

Accepted Answer

A physiological state of low activity and decreased metabolism to conserve energy

Question 19

Which of the following best describes the role of the hypothalamus in thermoregulation?

Accepted Answer

It acts as an integrator that processes sensory information and initiates appropriate responses.

Question 20

Which of the following is a correct statement about the relationship between form and function in animal tissues?

Accepted Answer

The structure of a tissue is closely correlated with its function.

Basic Principles of Animal Form and Function

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