Question 1

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

Accepted Answer

Weight is the force of gravity acting on mass.

Question 2

A patient is experiencing uncontrollable and sustained skeletal muscle contractions. Blood tests reveal a pH of 7.8. Which condition is most likely present?

Accepted Answer

Alkalosis

Question 3

Which of the following elements makes up the largest percentage of body weight in humans?

Accepted Answer

Oxygen

Question 4

What is the correct formula for calculating pH?

Accepted Answer

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

Question 5

Which type of chemical bond is most likely to form between sodium and chlorine?

Accepted Answer

Ionic bond

Question 6

A molecule of water (H$$_2O) is $$formed by which type of chemical bond?

Accepted Answer

Covalent bond

Question 7

Which of the following is a real-life example of a decomposition reaction in the human body?

Accepted Answer

Digestion of food into smaller molecules

Question 8

Which of the following best describes a buffer’s function in the body?

Accepted Answer

Buffers maintain pH homeostasis by removing or releasing H$$^+$$ ions.

Question 9

Which of the following is a property of water that is essential for its role in the human body?

Accepted Answer

Water provides lubrication and creates an environment for chemical reactions.

Question 10

Which of the following statements about ATP is correct?

Accepted Answer

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

Question 11

Which of the following best describes the difference between an exergonic and an endergonic reaction?

Accepted Answer

Exergonic reactions release energy, while endergonic reactions absorb energy.

Question 12

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

Accepted Answer

Iron

Question 13

Which of the following is true about isotopes?

Accepted Answer

Isotopes have the same number of protons but different numbers of neutrons.

Question 14

Which of the following is an example of a polar covalent bond?

Accepted Answer

Bond between hydrogen and oxygen in H$$_2O$$

Question 15

Which of the following best explains why oil and water do not mix?

Accepted Answer

Oil is nonpolar and water is polar.

Question 16

Which of the following is a correct pairing of DNA nucleotides?

Accepted Answer

Adenine with Thymine

Question 17

Which of the following is a function of electrolytes in the human body?

Accepted Answer

Electrolytes are responsible for muscle contraction, heart function, and nerve function.

Question 18

Which of the following is a property of enzymes?

Accepted Answer

Enzymes are proteins that speed up reactions without altering their own chemical make-up.

Question 19

Which of the following best describes the effect of increasing temperature on the rate of a chemical reaction in the body?

Accepted Answer

Increasing temperature increases kinetic energy and speeds up reactions.

Question 20

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

Accepted Answer

A + B \rightarrow AB

The Chemical Level of Organization: Foundations for Anatomy and Physiology

Study Guide - Practice Questions

Study Guide - Flashcards