Q: Which of the following is a correct equation for the hydrolysis of ATP to AMP?

$\text{ATP} \rightarrow \text{AMP} + \text{P}_i + 7.3 \ \text{kcal/mol}$

Question 1

Which of the following best describes the role of ATP in cellular metabolism?

Accepted Answer

ATP stores energy that can be released by breaking high-energy phosphate bonds.

Question 2

During the hydrolysis of ATP to ADP and inorganic phosphate, how much energy is released per mole?

Accepted Answer

$7.3 \ 	ext{kcal/mol}$

Question 3

Which of the following reactions is an example of an anabolic process?

Accepted Answer

The synthesis of proteins from amino acids using ATP.

Question 4

What is the main function of mitochondria in eukaryotic cells?

Accepted Answer

They synthesize ATP from energy-producing reactions.

Question 5

Which coenzyme is primarily involved in oxidation reactions that form carbon-oxygen double bonds?

Accepted Answer

NAD$^+$

Question 6

The pentose phosphate pathway is important because it:

Accepted Answer

Produces ribose and NADPH for biosynthetic reactions.

Question 7

Which of the following best describes the function of coenzyme A (CoA-SH)?

Accepted Answer

It transfers acetyl groups in metabolic reactions.

Question 8

Which of the following is a correct equation for the hydrolysis of ATP to AMP?

Accepted Answer

$	ext{ATP} ightarrow 	ext{AMP} + 	ext{P}_i + 7.3 \ 	ext{kcal/mol}$

Question 9

Which of the following statements about glycolysis is correct?

Accepted Answer

Glycolysis involves the breakdown of glucose to pyruvate, producing ATP and NADH.

Question 10

Which coenzyme is reduced during the oxidation of succinate to fumarate in the citric acid cycle?

Accepted Answer

FAD

Question 11

What is the primary function of ribosomes in eukaryotic cells?

Accepted Answer

They are the site of protein synthesis using mRNA templates.

Question 12

Which of the following best describes the role of NADPH in metabolism?

Accepted Answer

It is used in anabolic reactions such as lipid and nucleic acid synthesis.

Question 13

Which of the following is a correct description of the three stages of catabolism?

Accepted Answer

Stage 1: Digestion of large molecules; Stage 2: Breakdown to two- and three-carbon compounds; Stage 3: Oxidation of acetyl CoA to CO$_2$, H$_2$O, and ATP.

Question 14

Which of the following is a function of lysosomes in animal cells?

Accepted Answer

They contain hydrolytic enzymes that digest and recycle old cell structures.

Question 15

Which of the following best describes the function of FAD in metabolic reactions?

Accepted Answer

FAD is involved in reactions that form C=C bonds.

Question 16

Which of the following statements about redox reactions in metabolism is correct?

Accepted Answer

Oxidation involves the loss of hydrogen or electrons, and reduction involves the gain of hydrogen or electrons.

Question 17

Which of the following is a correct match for the function of ADP + P$_i$?

Accepted Answer

Hydrolysis products

Question 18

Which of the following best explains why ATP hydrolysis is often coupled to energy-requiring reactions?

Accepted Answer

The energy released from ATP hydrolysis can drive non-spontaneous reactions.

Question 19

Which of the following is the correct overall equation for the combined reaction of glutamate with ammonia and ATP to form glutamine, including the net energy change?

Accepted Answer

$	ext{Glu} + 	ext{NH}_3 + 	ext{ATP} ightarrow 	ext{Gln} + 	ext{ADP} + 	ext{P}_i + 3.9 \ 	ext{kcal/mol}$

Question 20

Which of the following is a correct description of the function of the cell membrane in animal cells?

Accepted Answer

It separates the contents of a cell from the external environment and contains structures that communicate with other cells.

Metabolic Pathways for Carbohydrates: Structure, Energy, and Coenzymes (Ch. 22 Study Notes)

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