Question 1

Which of the following best explains why Emperor penguins huddle together during the Antarctic winter?

Accepted Answer

To reduce individual exposure to wind and conserve heat through behavioral thermoregulation

Question 2

Which physical law most directly limits the maximum size of fast-swimming aquatic animals such as seals, penguins, and tuna?

Accepted Answer

The law of hydrodynamics, which governs resistance and drag in water

Question 3

Why do multicellular animals require specialized internal exchange surfaces, while single-celled organisms do not?

Accepted Answer

Multicellular animals have a lower surface area to volume ratio, limiting direct exchange with the environment

Question 4

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

Accepted Answer

Nervous tissue

Question 5

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

Accepted Answer

Cartilage – strong, flexible support

Question 6

Which of the following best describes the difference between the endocrine and nervous systems?

Accepted Answer

The endocrine system uses hormones for widespread, gradual changes; the nervous system uses electrical impulses for rapid, targeted responses

Question 7

A patient’s blood glucose level rises above the set point. Which of the following best describes the homeostatic response?

Accepted Answer

A sensor detects the change, the control center triggers insulin release, and glucose is lowered toward the set point

Question 8

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

Accepted Answer

Sweating to cool the body when body temperature rises above normal

Question 9

Which adaptation allows marine mammals to minimize heat loss in cold water?

Accepted Answer

Countercurrent heat exchangers in their circulatory system

Question 10

Which process is responsible for heat loss when a dog pants on a hot day?

Accepted Answer

Evaporation

Question 11

Which of the following equations correctly represents the relationship between metabolic rate (MR) and body mass (m) in animals?

Accepted Answer

$$MR = m$$^{3/4}$$

Question 12

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

Accepted Answer

Endotherms can maintain a stable body temperature despite environmental fluctuations

Question 13

A lizard moves from a sunny rock to the shade during midday. This behavior is an example of:

Accepted Answer

Behavioral thermoregulation

Question 14

Which tissue type is responsible for voluntary movement in animals?

Accepted Answer

Skeletal muscle

Question 15

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

Accepted Answer

It is specialized for rapid heat production through nonshivering thermogenesis

Question 16

Which of the following is a real-life example of acclimatization?

Accepted Answer

A person’s body producing more red blood cells after moving to high altitude

Question 17

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

Accepted Answer

Transmitting electrical impulses

Question 18

Which organ system is primarily responsible for the coordination of body activities via hormones?

Accepted Answer

Endocrine system

Question 19

Which of the following best explains why smaller animals have higher metabolic rates per gram than larger animals?

Accepted Answer

They lose heat more rapidly due to a higher surface area to volume ratio

Question 20

Which of the following is an example of positive feedback?

Accepted Answer

Amplification of uterine contractions during childbirth

Basic Principles of Animal Form and Function (Chapter 40 Study Guide)

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