Question 1

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

Accepted Answer

A large molecule breaks down into two or more smaller molecules.

Question 2

Which equation correctly represents a synthesis reaction?

Accepted Answer

$$A + B \rightarrow AB$$

Question 3

A patient is given an intravenous solution containing glucose. The body breaks down this glucose to release energy. Which type of reaction is primarily responsible for this process?

Accepted Answer

Decomposition reaction

Question 4

Which of the following is an example of a double replacement reaction in the human body?

Accepted Answer

The reaction of stomach acid (HCl) with sodium bicarbonate (NaHCO$$_3) to $$form NaCl and H$$_2CO$_3$$

Question 5

Which of the following best describes the law of mass action as it applies to reversible reactions?

Accepted Answer

The direction of the reaction is determined by the relative abundance of substances on either side of the equation.

Question 6

Which of the following reactions is an example of oxidation?

Accepted Answer

A molecule loses electrons.

Question 7

In the reaction $$CO_2 + H_2O$$ \rightleftharpoons H_2CO_3 \rightleftharpoons $$HCO_3^- + H$$^+$$, what would happen if the concentration of CO_2$ increases?

Accepted Answer

The reaction will shift to the right, producing more $$H_2CO_3$$ and $$HCO_3$$^-$$.

Question 8

Which of the following statements about enzymes is correct?

Accepted Answer

Enzymes lower the activation energy required for a reaction to occur.

Question 9

A patient is experiencing rapid muscle contractions, which require a quick supply of ATP. Which type of reaction is primarily responsible for the rapid release of energy from ATP?

Accepted Answer

Decomposition reaction

Question 10

Which of the following best describes catabolism?

Accepted Answer

Energy-releasing (exergonic) decomposition reactions

Question 11

Which of the following is a correct example of a single replacement reaction?

Accepted Answer

$$AB + C \rightarrow AC + B$$

Question 12

Which of the following best explains why increasing temperature generally increases the rate of a chemical reaction?

Accepted Answer

It increases the kinetic energy of molecules, leading to more frequent and forceful collisions.

Question 13

Which of the following is true regarding anabolism?

Accepted Answer

It is driven by the energy released from catabolism.

Question 14

A patient is unable to efficiently break down dietary proteins into amino acids. Which type of reaction is most likely impaired?

Accepted Answer

Decomposition reaction

Question 15

Which of the following best describes a redox (oxidation-reduction) reaction?

Accepted Answer

A reaction in which one molecule is oxidized (loses electrons) and another is reduced (gains electrons).

Question 16

Which of the following is an example of potential energy in the human body?

Accepted Answer

The chemical energy stored in the bonds of glucose

Question 17

Which of the following best describes the role of catalysts in chemical reactions?

Accepted Answer

They bind to reactants and orient them to facilitate the reaction without being changed themselves.

Question 18

Which of the following is a correct representation of a double replacement reaction?

Accepted Answer

$$AB + CD \rightarrow AC + BD$$

Question 19

A patient is given a medication that acts as an enzyme inhibitor. What is the most likely effect on the patient's metabolic reactions?

Accepted Answer

The rate of metabolic reactions will decrease.

Question 20

Which of the following best describes the relationship between catabolism and anabolism?

Accepted Answer

Anabolism is driven by the energy released from catabolism.

Chapter 2: Chemistry of Life: Chemical Reactions and Energy in Anatomy & Physiology

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