$$\mathrm{ATP} + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{ADP} + \mathrm{P}_i + \text{energy}$$

Question 1

Which of the following best describes the relationship between catabolic and anabolic pathways in cellular metabolism?

Accepted Answer

Catabolic pathways release energy that is used to drive anabolic reactions.

Question 2

Digesting a large protein into amino acids is an example of which metabolic process?

Accepted Answer

Catabolism, because it breaks down molecules to release energy.

Question 3

Which molecule acts as the primary energy currency in cells, coupling exergonic and endergonic reactions?

Accepted Answer

Adenosine Triphosphate (ATP)

Question 4

A muscle cell synthesizing new actin filaments during growth is an example of:

Accepted Answer

Anabolic pathway

Question 5

Which of the following equations correctly represents the hydrolysis of ATP?

Accepted Answer

$$\mathrm{ATP} + \mathrm{H}_2\mathrm{O} ightarrow \mathrm{ADP} + \mathrm{P}_i + 	ext{energy}$$

Question 6

Which of the following is a benefit of organizing metabolic reactions into enzyme-controlled pathways?

Accepted Answer

It allows for multiple points of regulation and efficient energy use.

Question 7

A person’s Basal Metabolic Rate (BMR) is most accurately measured under which conditions?

Accepted Answer

At complete rest, not digesting food, in a controlled environment

Question 8

Which of the following best explains why ATP is required for anabolic reactions?

Accepted Answer

ATP provides the energy needed to form new chemical bonds.

Question 9

If a cell is unable to regenerate ATP from ADP and $$P_i$$, which process would be directly affected?

Accepted Answer

Anabolic synthesis of proteins

Question 10

Which of the following scenarios illustrates energy coupling in a cell?

Accepted Answer

The hydrolysis of ATP provides energy for the synthesis of DNA.

Question 11

Which of the following is NOT a factor used to estimate Basal Metabolic Rate (BMR)?

Accepted Answer

Blood type

Question 12

Which of the following best describes the role of enzymes in metabolic pathways?

Accepted Answer

They regulate the speed and efficiency of metabolic reactions.

Question 13

A hummingbird has a much higher metabolic rate per gram of body mass than an elephant. What does this imply about its energy needs?

Accepted Answer

It requires more energy per gram than an elephant.

Question 14

Which of the following is an example of a catabolic reaction?

Accepted Answer

Breakdown of starch into glucose molecules

Question 15

Which equation represents the phosphorylation of ADP to form ATP?

Accepted Answer

$$\mathrm{ADP} + \mathrm{P}_i + 	ext{energy} ightarrow \mathrm{ATP}$$

Question 16

Which of the following statements about metabolic pathways is correct?

Accepted Answer

They involve a series of enzyme-controlled reactions that can be regulated at multiple points.

Question 17

Which process is most directly responsible for the recycling of monomers into new cellular structures?

Accepted Answer

Anabolism

Question 18

A patient is unable to digest food properly due to a lack of certain enzymes. Which aspect of metabolism is most directly affected?

Accepted Answer

Catabolic pathways

Question 19

Which of the following best explains why energy coupling is essential for life?

Accepted Answer

It ensures that energy released from catabolic reactions is used to power anabolic reactions.

Question 20

Which of the following is a real-life example of an anabolic process?

Accepted Answer

Synthesis of muscle proteins after exercise

Metabolism: The Chemistry of Life – Catabolic and Anabolic Pathways

Study Guide - Practice Questions