Question 1

Which of the following best describes the difference between an atom and a molecule?

Accepted Answer

An atom is the smallest unit of a chemical element, while a molecule is a group of two or more atoms bonded together.

Question 2

Which chemical reaction is most responsible for the breakdown of glucose to release energy in human cells?

Accepted Answer

Decomposition

Question 3

A patient’s blood pH is measured at 7.1. Which buffer system is most likely to be involved in maintaining homeostasis?

Accepted Answer

The bicarbonate buffer system

Question 4

Which of the following is a correct description of a covalent bond?

Accepted Answer

A bond formed by the sharing of electron pairs between atoms.

Question 5

Which of the following is NOT a monomer of proteins?

Accepted Answer

Nucleotide

Question 6

Which functional group is most commonly found in carbohydrates and is responsible for their reactivity?

Accepted Answer

Hydroxyl group ($$-OH)$$

Question 7

Which of the following best explains the importance of ATP in the human body?

Accepted Answer

ATP stores and transfers energy for cellular processes.

Question 8

A scientist needs to convert 250 milliliters (mL) of a solution to liters (L). What is the correct conversion?

Accepted Answer

$$250 \div 1000 = 0.25 L$$

Question 9

Which of the following best describes the role of protein shape in its function?

Accepted Answer

The specific three-dimensional shape of a protein determines its ability to bind to other molecules and perform its function.

Question 10

Which of the following is a correct example of an exchange reaction?

Accepted Answer

$$AB + CD \rightarrow AD + CB$$

Question 11

Which of the following is a correct statement about acids and bases in the human body?

Accepted Answer

Acids release hydrogen ions ($$H^+) in $$solution, while bases accept hydrogen ions.

Question 12

Which of the following is a correct description of the difference between organic and inorganic compounds?

Accepted Answer

Organic compounds contain carbon and hydrogen, while inorganic compounds generally do not.

Question 13

Which of the following is the correct order of levels of organization in the human body, from simplest to most complex?

Accepted Answer

Atom, molecule, cell, tissue, organ, organ system, organism

Question 14

A solution has a pH of 5. Which of the following statements is correct?

Accepted Answer

The solution is acidic because its pH is less than 7.

Question 15

Which of the following is a monomer of nucleic acids?

Accepted Answer

Nucleotide

Question 16

Which lab equipment would you use to accurately measure the volume of a liquid?

Accepted Answer

Graduated cylinder

Question 17

Which of the following best describes the role of functional groups in organic molecules?

Accepted Answer

Functional groups determine the chemical reactivity and properties of organic molecules.

Question 18

Which of the following is a correct example of a synthesis reaction?

Accepted Answer

$$A + B \rightarrow AB$$

Question 19

Which of the following is a correct statement about the role of carbohydrates in the human body?

Accepted Answer

Carbohydrates provide a primary source of energy for cells.

Question 20

A researcher needs to measure the temperature of a solution in the lab. Which unit should they use?

Accepted Answer

Degrees Celsius ($$^{\circ}C)$$

Anatomy & Physiology: Foundational Concepts, Organic Chemistry, and Laboratory Skills

Study Guide - Practice Questions