Question 1

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

Accepted Answer

Anatomy focuses on the physical relationships and structure of body parts, while physiology focuses on the functions and processes of those parts.

Question 2

Which level of organization in the human body is defined as a group of similar cells working together to perform a specific function?

Accepted Answer

Tissue level

Question 3

A patient is experiencing difficulty in muscle contraction and communication between nerve cells. Which two types of tissue are most likely affected?

Accepted Answer

Muscle and nervous tissue

Question 4

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

Accepted Answer

Cardiovascular system

Question 5

Homeostasis relies on which sequence of components to maintain a stable internal environment?

Accepted Answer

Sensors, control centers, effectors

Question 6

Which feedback mechanism opposes deviations from a set point, such as body temperature regulation?

Accepted Answer

Negative feedback

Question 7

A patient has a blood pH of 7.2. According to the pH scale, this condition is considered:

Accepted Answer

Acidic

Question 8

Which of the following best describes the role of enzymes in biological reactions?

Accepted Answer

Enzymes lower activation energy, speeding up reactions.

Question 9

Which statement about ATP (adenosine triphosphate) is correct?

Accepted Answer

ATP releases energy when phosphate bonds are broken.

Question 10

Which of the following is a correct directional term for 'toward the midline' of the body?

Accepted Answer

Medial

Question 11

A molecule of water ($\mathrm{H_2O}$) is held together by which type of bond?

Accepted Answer

Covalent bond

Question 12

Which of the following is true regarding the plasma membrane of a cell?

Accepted Answer

It is selectively permeable, controlling entry and exit.

Question 13

Which functional group is characteristic of organic acids?

Accepted Answer

Carboxyl ($\mathrm{-COOH}$)

Question 14

Which type of lipid is a major component of cell membranes, containing hydrophilic heads and hydrophobic tails?

Accepted Answer

Phospholipids

Question 15

A solution has a hydrogen ion concentration of $1 	imes 10^{-8}$ mol/L. What is its pH?

Accepted Answer

$8$

Question 16

Which of the following best explains why water is an effective solvent in the human body?

Accepted Answer

Water's polarity and hydrogen bonding allow it to dissolve many substances.

Question 17

Which of the following is a correct statement about proteins?

Accepted Answer

Proteins are made of amino acids and can have up to four levels of structure.

Question 18

Which organ system is responsible for eliminating wastes, regulating water and salts, and producing urine?

Accepted Answer

Urinary system

Question 19

A mutation in the DNA sequence affects the order of amino acids in a protein. Which level of protein structure is directly impacted?

Accepted Answer

Primary structure

Question 20

Which of the following best describes the function of buffers in body fluids?

Accepted Answer

Buffers neutralize excess acids or bases, helping maintain pH balance.

Anatomy & Physiology: Foundations, Organization, and Biochemistry

Study Guide - Practice Questions