$$3 Na^+_{\text{in}} \rightarrow 3 Na^+_{\text{out}}; 2 K^+_{\text{out}} \rightarrow 2 K^+_{\text{in}}$$

Question 1

Which statement best describes the principle of complementarity in Anatomy & Physiology?

Accepted Answer

The function of a body part is determined by its structure; anatomical features enable physiological processes.

Question 2

Which organ system is primarily responsible for transporting nutrients, gases, and wastes throughout the body?

Accepted Answer

Cardiovascular system

Question 3

Homeostasis is crucial for survival because it:

Accepted Answer

Allows the body to maintain a stable internal environment despite external changes.

Question 4

Which of the following is an example of a positive feedback mechanism?

Accepted Answer

Blood clotting after injury

Question 5

A patient is lying face up with arms at their sides and palms facing forward. This describes which anatomical position?

Accepted Answer

Standard anatomical position

Question 6

Which body cavity contains the heart?

Accepted Answer

Thoracic cavity

Question 7

Which membrane directly covers the surface of organs within a body cavity?

Accepted Answer

Visceral membrane

Question 8

Which of the following best describes a polar covalent bond and its effect on water?

Accepted Answer

Electrons are shared unequally, giving water partial charges and allowing hydrogen bonding.

Question 9

Which equation correctly represents a synthesis reaction?

Accepted Answer

$$A + B \rightarrow AB$$

Question 10

Which condition would NOT increase the rate of a chemical reaction?

Accepted Answer

Decreasing reactant concentration

Question 11

A solution has a pH of 3. Which statement is true?

Accepted Answer

It is acidic and has a high concentration of $$[H^+].$$

Question 12

Which macromolecule is primarily responsible for storing genetic information?

Accepted Answer

Nucleic acids

Question 13

Which organelle is responsible for producing ATP through cellular respiration?

Accepted Answer

Mitochondrion

Question 14

Which function is NOT performed by membrane proteins?

Accepted Answer

Synthesis of DNA

Question 15

A red blood cell placed in a hypertonic solution will:

Accepted Answer

Shrink as water leaves the cell.

Question 16

Which equation represents the action of the sodium-potassium pump?

Accepted Answer

$$3 Na^+_{	ext{in}} ightarrow 3 Na^+_{	ext{out}}; 2 K^+_{	ext{out}} ightarrow 2 K^+_{	ext{in}}$$

Question 17

Which type of cell junction allows ions and small molecules to pass directly between adjacent cells?

Accepted Answer

Gap junction

Question 18

Which type of epithelial tissue is best suited for absorption and secretion in the intestines?

Accepted Answer

Simple columnar epithelium

Question 19

Which connective tissue fiber provides high tensile strength to structures such as tendons?

Accepted Answer

Collagen fibers

Question 20

During tissue repair, which of the following is NOT one of the five signs of inflammation?

Accepted Answer

Loss of sensation

BIOL 236 Exam 1 (CH 1-4) Study Guidance

Study Guide - Practice Questions