$$\text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2 \rightarrow 6\text{CO}_2 + 6\text{H}_2\text{O} + \text{ATP}$$

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

Question 1

Which of the following best describes the net products of glycolysis per molecule of glucose?

Accepted Answer

2 ATP, 2 NADH, 2 pyruvate

Question 2

During pyruvate processing, what is the fate of the carbon atoms from pyruvate?

Accepted Answer

They are released as CO$$_2$$

Question 3

Which equation correctly represents the overall reaction for cellular respiration?

Accepted Answer

$$	ext{C}_6	ext{H}_{12}	ext{O}_6 + 6	ext{O}_2 ightarrow 6	ext{CO}_2 + 6	ext{H}_2	ext{O} + 	ext{ATP}$$

Question 4

Which step of cellular respiration produces the most ATP?

Accepted Answer

Electron transport and oxidative phosphorylation

Question 5

If oxygen is not present, what process do cells use to regenerate NAD$$^+$$ for glycolysis?

Accepted Answer

Fermentation

Question 6

Which molecule acts as the final electron acceptor in the electron transport chain during aerobic respiration?

Accepted Answer

O$$_2$$

Question 7

How many times does the citric acid cycle run for each glucose molecule oxidized?

Accepted Answer

Twice

Question 8

Which of the following is a direct product of lactic acid fermentation in human muscle cells?

Accepted Answer

Lactate

Question 9

What is the main purpose of the electron transport chain in cellular respiration?

Accepted Answer

To establish a proton gradient across the inner mitochondrial membrane

Question 10

Which enzyme complex is responsible for synthesizing ATP using the proton gradient in mitochondria?

Accepted Answer

ATP synthase

Question 11

During glycolysis, which molecule is required to accept electrons and become reduced?

Accepted Answer

NAD$$^+$$

Question 12

Which of the following best explains why fermentation is less efficient than cellular respiration?

Accepted Answer

Fermentation does not use an electron transport chain

Question 13

In the citric acid cycle, what is the fate of the carbons from acetyl CoA?

Accepted Answer

They are released as CO$$_2$$

Question 14

Which of the following is a correct summary of the ATP yield from one molecule of glucose during aerobic respiration?

Accepted Answer

2 ATP from glycolysis, 2 ATP from citric acid cycle, 25 ATP from oxidative phosphorylation

Question 15

Which process occurs in the cytosol of eukaryotic cells?

Accepted Answer

Glycolysis

Question 16

A patient with a genetic defect in Complex IV of the electron transport chain would most likely experience which of the following?

Accepted Answer

Decreased ATP production due to impaired oxidative phosphorylation

Question 17

Which of the following is true about the citric acid cycle?

Accepted Answer

It produces NADH, FADH$$_2$$, and CO$$_2$$

Question 18

Which of the following best describes the role of oxygen in cellular respiration?

Accepted Answer

It is the final electron acceptor in the electron transport chain

Question 19

If a cell is deprived of oxygen, which of the following would most likely occur?

Accepted Answer

Fermentation would occur to regenerate NAD$$^+$$

Question 20

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

Accepted Answer

$$	ext{ATP} + 	ext{H}_2	ext{O} ightarrow 	ext{ADP} + 	ext{P}_i + 	ext{Energy}$$

Study guide 13

Study Guide - Practice Questions