Question 1

Which of the following best explains why large animals require more complex internal transport systems than small animals?

Accepted Answer

Large animals have a lower surface area to volume ratio, making diffusion alone insufficient for material exchange.

Question 2

Which tissue type is primarily responsible for transmitting electrical impulses in animals?

Accepted Answer

Nervous tissue

Question 3

A patient is unable to sweat due to a genetic disorder. Which thermoregulatory process is most directly impaired?

Accepted Answer

Evaporative heat loss

Question 4

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

Accepted Answer

Release of insulin to lower blood glucose after a meal

Question 5

Which equation correctly represents the relationship between basal metabolic rate (BMR) and body mass in mammals?

Accepted Answer

$$BMR \propto m$$^{3/4}$$

Question 6

Which adaptation allows marine mammals to maintain a high body temperature in cold water?

Accepted Answer

Insulation by blubber

Question 7

Which of the following best describes the function of brown adipose tissue (BAT) in mammals?

Accepted Answer

It generates heat through nonshivering thermogenesis.

Question 8

A fish and a dolphin both have streamlined bodies for fast swimming. This is an example of:

Accepted Answer

Convergent evolution

Question 9

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

Accepted Answer

Transmitting nerve impulses

Question 10

Which process is illustrated by the following scenario: A lizard basks in the sun to raise its body temperature?

Accepted Answer

Behavioral thermoregulation

Question 11

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

Accepted Answer

It acts as a thermostat, triggering heat loss or heat generation mechanisms.

Question 12

Which of the following is a correct pairing of organ system and its main function?

Accepted Answer

Excretory system – disposal of metabolic wastes

Question 13

Which of the following is a real-world example of positive feedback?

Accepted Answer

Amplification of uterine contractions during childbirth

Question 14

Which of the following best explains why hummingbirds enter torpor at night?

Accepted Answer

To drastically reduce metabolic rate and conserve energy when food is unavailable

Question 15

Which of the following is a key difference between the endocrine and nervous systems?

Accepted Answer

The endocrine system transmits signals via hormones in the blood, while the nervous system uses electrical impulses along neurons.

Question 16

Which of the following best describes the arrangement and function of countercurrent heat exchangers in marine mammals?

Accepted Answer

They transfer heat between blood vessels flowing in opposite directions, reducing heat loss.

Question 17

Which of the following is a correct statement about metabolic rates in endotherms and ectotherms?

Accepted Answer

Ectotherms have much lower metabolic rates than endotherms of comparable size.

Question 18

Which of the following best describes acclimatization?

Accepted Answer

Adjustment to multiple environmental factors over time

Question 19

Which of the following is a function of connective tissue?

Accepted Answer

Providing strength and flexibility through collagen fibers

Question 20

A scientist measures the oxygen consumption of a fasting, resting lizard at a specific temperature. What is being measured?

Accepted Answer

Standard metabolic rate (SMR)

lecture 1 Chapter 40 Basic Principles of Animal Form and Function

Study Guide - Practice Questions