Q: Which of the following best describes the overall chemical equation for cellular respiration?

$$\mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} \rightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + \text{energy (ATP + heat)}$$

Question 1

Which of the following best describes the overall chemical equation for cellular respiration?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} ightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + 	ext{energy (ATP + heat)}$$

Question 2

During the oxidation of glucose in cellular respiration, which molecule acts as the final electron acceptor?

Accepted Answer

Oxygen ($$\mathrm{O_2$})$$

Question 3

Which process occurs in the cytosol and results in the net production of 2 ATP and 2 NADH per glucose molecule?

Accepted Answer

Glycolysis

Question 4

In the context of redox reactions, which statement is correct?

Accepted Answer

Oxidation is the loss of electrons; reduction is the gain of electrons.

Question 5

Which enzyme is responsible for catalyzing the reduction of NAD+ to NADH during cellular respiration?

Accepted Answer

Dehydrogenase

Question 6

What is the net ATP yield from glycolysis per molecule of glucose?

Accepted Answer

$$2\ 	ext{ATP}$$

Question 7

Which of the following is NOT an immediate net product of the mitochondrial electron transport chain?

Accepted Answer

ATP

Question 8

If the inner mitochondrial membrane is removed, which process can still produce ATP from glucose?

Accepted Answer

Glycolysis and fermentation

Question 9

ATP synthase produces ATP by coupling the phosphorylation of ADP to which process?

Accepted Answer

Allowing H+ to move down its electrochemical gradient

Question 10

Through beta oxidation, fats are converted to acetyl CoA. Which steps of aerobic respiration do these acetyl CoA molecules bypass?

Accepted Answer

Glycolysis and pyruvate oxidation

Question 11

What is the main purpose of fermentation reactions in cells?

Accepted Answer

To regenerate NAD+ so glycolysis can continue

Question 12

During intense exercise, muscles lack sufficient oxygen. Which process do they mainly use to generate ATP?

Accepted Answer

Lactic acid fermentation

Question 13

Which of the following contains useful energy for the cell?

Accepted Answer

ATP and proton gradient

Question 14

What has more free energy: carbon dioxide and water or glucose and oxygen, and why?

Accepted Answer

Glucose and oxygen because they have not yet reacted

Question 15

How are photosynthesis and cellular respiration connected in the cell?

Accepted Answer

Photosynthesis produces glucose, full of energy, and cellular respiration extracts that energy

Question 16

Which statement about the citric acid cycle is true?

Accepted Answer

It makes ATP through substrate-level phosphorylation

Question 17

Which of the following processes is incorrectly matched with its location in a eukaryotic cell?

Accepted Answer

Formation of ATP by substrate-level phosphorylation—via the F1F0-ATP synthase in the inner mitochondrial membrane

Question 18

A drug known as an uncoupler facilitates diffusion of protons across the mitochondrial membrane. If glycolysis and the citric acid cycle rates stay the same, what happens to ATP synthesis and oxygen consumption?

Accepted Answer

ATP synthesis will decrease; oxygen consumption will greatly increase

Question 19

Which molecule is reduced during glycolysis and acts as an electron carrier for later steps in cellular respiration?

Accepted Answer

NAD+

Question 20

What is the net equation for the oxidation of hydrogen by fluorine, as shown in the study materials?

Accepted Answer

$$\mathrm{H_2$} + \mathrm{F_2$} \rightarrow 2\mathrm{HF}$$

AP Biology Chapter 9 : Cellular Respiration

Guida di studio - Domande di pratica

Study guide - Flashcard