Question 1

Which of the following best explains why the laryngeal nerve in a giraffe takes a long detour from the brain to the throat, rather than following a direct path?

Accepted Answer

It is an example of evolutionary constraint, where the nerve's path is a result of the animal's evolutionary history rather than optimal design.

Question 2

Which tissue type is primarily responsible for rapid communication and coordination in animal bodies?

Accepted Answer

Nervous tissue

Question 3

A patient suffers a tendon injury. Which type of tissue is most likely damaged?

Accepted Answer

Fibrous connective tissue

Question 4

Which of the following is a function of the dermis layer of the skin?

Accepted Answer

Synthesizing vitamin D

Question 5

Which of the following best describes the relationship between anatomy and physiology?

Accepted Answer

Anatomy is the study of structure, while physiology is the study of function.

Question 6

Which of the following is NOT a function of the integumentary system?

Accepted Answer

Transporting oxygen throughout the body

Question 7

A scientist is designing a robot that can climb smooth surfaces, inspired by the gecko's adhesive system. Which molecular interaction is most important for this function?

Accepted Answer

Van der Waals forces

Question 8

Which of the following best describes homeostasis?

Accepted Answer

The active maintenance of a steady internal state despite external fluctuations

Question 9

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

Accepted Answer

Sweating to cool the body when it becomes overheated

Question 10

Which of the following best explains why small mammals in cold climates enter torpor or hibernation?

Accepted Answer

To reduce metabolic rate and conserve energy when heat loss is high due to a large surface area-to-volume ratio

Question 11

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

Accepted Answer

Adipose tissue – energy storage

Question 12

Which of the following organ systems is primarily responsible for disposing of metabolic wastes?

Accepted Answer

Urinary system

Question 13

Which of the following best describes the structure of simple squamous epithelium?

Accepted Answer

A single layer of flat, fried-egg shaped cells

Question 14

Which of the following is a real-world example of countercurrent heat exchange in animals?

Accepted Answer

The flippers of dolphins, where arteries and veins are closely aligned to conserve heat

Question 15

Which of the following best describes the difference between endotherms and ectotherms?

Accepted Answer

Endotherms generate heat by metabolism; ectotherms gain heat from external sources.

Question 16

Which of the following is a function of oil (sebaceous) glands in the skin?

Accepted Answer

Inhibiting the growth of bacteria

Question 17

Which of the following best describes the role of melanin in the skin?

Accepted Answer

It is released in response to ultraviolet light and helps protect DNA from damage.

Question 18

Which of the following is a correct sequence of biological organization from smallest to largest?

Accepted Answer

Cell → Tissue → Organ → Organ system → Organism

Question 19

Which of the following best explains why the body temperature of a poikilotherm varies with its environment?

Accepted Answer

Poikilotherms do not regulate their internal temperature metabolically.

Question 20

Which of the following is a multi-step example of how structure fits function in animal tissues?

Accepted Answer

The stratified squamous epithelium of the epidermis provides protection against abrasion, while the underlying connective tissue supplies nutrients and support.

Unifying Concepts of Animal Structure and Function (Chapter 20) – General Biology Study Notes

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