Question 1

Which of the following best describes the relationship between mass and weight in the context of human anatomy?

Accepted Answer

Weight is the force of gravity acting on mass.

Question 2

Which element makes up the largest percentage of the human body by weight?

Accepted Answer

Oxygen

Question 3

A patient is diagnosed with acidosis. Which of the following best describes their blood pH?

Accepted Answer

pH below 7.35

Question 4

Which of the following is a correct chemical equation for the synthesis reaction of methane?

Accepted Answer

$$\mathrm{C} + 4\mathrm{H} \rightarrow \mathrm{CH}_4$$

Question 5

Which of the following statements about water is FALSE?

Accepted Answer

Water is nonpolar and does not dissolve salts.

Question 6

What is the primary function of nucleic acids in the body?

Accepted Answer

Storage and transfer of information for protein synthesis

Question 7

Which of the following best describes an ionic bond?

Accepted Answer

A bond formed by electrical attraction between cations and anions.

Question 8

Which of the following is a strong acid that completely dissociates in solution?

Accepted Answer

Hydrochloric acid ($$\mathrm{HCl})$$

Question 9

Which of the following is a property of enzymes in the body?

Accepted Answer

They speed up reactions without altering their own chemical makeup.

Question 10

Which of the following best describes a buffer in the body?

Accepted Answer

A substance that resists changes in pH by removing or releasing $$\mathrm{H}^+$$ ions.

Question 11

Which of the following is a correct pairing of DNA nitrogenous bases?

Accepted Answer

Adenine with Thymine

Question 12

Which of the following is a real-life example of protein denaturation?

Accepted Answer

Cooking an egg

Question 13

Which of the following is a property of a polar covalent bond?

Accepted Answer

Electrons are shared unequally, producing polarity.

Question 14

Which of the following best describes the role of ATP in the body?

Accepted Answer

ATP is the most fundamental form of energy in living systems.

Question 15

Which of the following is a correct formula for calculating pH?

Accepted Answer

$$\mathrm{pH} = -\log_{10} [\mathrm{H}^+]$$

Question 16

Which of the following is a trace element found in the human body?

Accepted Answer

Iron

Question 17

Which of the following best describes the difference between organic and inorganic compounds?

Accepted Answer

Organic compounds contain carbon and hydrogen as their primary structural components.

Question 18

Which of the following factors increases the rate of a chemical reaction in the body?

Accepted Answer

Increasing concentration of reactants

Question 19

Which of the following is a real-life application of electrolytes in the body?

Accepted Answer

Electrolytes are responsible for muscle contraction and nerve function.

Question 20

Which of the following best describes a synthesis reaction?

Accepted Answer

A reaction where two or more molecules combine to form a larger molecule.

The Chemical Level of Organization: Foundations for Anatomy and Physiology

Study Guide - Practice Questions