$$[H^+] = 1 \times 10$$^{-9}$$ M

Question 1

Which of the following best describes a synthesis reaction in the context of human physiology?

Accepted Answer

A reaction where atoms or molecules combine to form a larger, more complex molecule, such as amino acids joining to form a protein.

Question 2

Which chemical equation correctly represents a decomposition reaction?

Accepted Answer

$$AB \rightarrow A + B$$

Question 3

During cellular respiration, which of the following is the correct balanced chemical equation for the breakdown of glucose?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + ATP$$

Question 4

Which factor would most likely decrease the rate of a chemical reaction in the human body?

Accepted Answer

Decreasing the temperature.

Question 5

Which of the following statements about enzymes is TRUE?

Accepted Answer

Enzymes increase the rate of chemical reactions without being chemically changed.

Question 6

A patient is suffering from acidosis. Which of the following pH values would most likely be found in their blood?

Accepted Answer

$$pH = 7.0$$

Question 7

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

Accepted Answer

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

Question 8

Which property of water is most important for regulating body temperature during exercise?

Accepted Answer

Water's high heat capacity.

Question 9

Which of the following best distinguishes organic compounds from inorganic compounds?

Accepted Answer

Organic compounds contain carbon and are usually covalently bonded.

Question 10

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

Accepted Answer

The solution is acidic.

Question 11

Which of the following is a correct example of a molecule and a compound?

Accepted Answer

Molecule: $$O_2$$; Compound: $$CO_2$$

Question 12

Which of the following is NOT a function of lipids in the human body?

Accepted Answer

Catalyzing chemical reactions.

Question 13

Which structural level of proteins is directly responsible for the protein's overall 3D shape and function?

Accepted Answer

Tertiary structure.

Question 14

Which of the following is a correct statement about phospholipids?

Accepted Answer

They form the basic structure of cell membranes.

Question 15

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

Accepted Answer

They function as signaling molecules involved in inflammation and immunity.

Question 16

Which of the following is TRUE regarding nucleic acids?

Accepted Answer

They store and transmit genetic information.

Question 17

A patient is given a solution with a pH of 9. What is the concentration of hydrogen ions $$[H^+] in $$this solution?

Accepted Answer

$$[H^+] = 1 	imes 10$$^{-9}$$ M

Question 18

Which of the following is an example of a globular protein and its function?

Accepted Answer

Hemoglobin; transports oxygen in the blood.

Question 19

Which of the following statements about acids and bases is correct?

Accepted Answer

Acids release $$H^+$$ ions in solution.

Question 20

Which of the following is a real-life example of an exchange reaction in human physiology?

Accepted Answer

Transfer of a phosphate group from ATP to glucose during glycolysis.

Chapter 2: Chemistry and Molecules – Foundations for Anatomy & Physiology

Study Guide - Practice Questions