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Electron Transport Chain Quiz

Test your knowledge of the Electron Transport Chain by attempting our 13-mark quiz. However, If you do not know this topic or want to revise it, read our detailed guide on the Electron Transport Chain.

Let us start our quiz on the Electron Transport Chain with answers.

Electron Transport Chain Quiz

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Question 1 of 13

1. Question

1. What does the electron transport chain do during cellular respiration?

A) Generates ATP directly from glucose
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B) Transfers electrons, building a proton gradient for ATP production
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C) Breaks down glucose into pyruvate
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D) Oxidizes fatty acids
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Question 2 of 13

2. Question

2. In which membrane is the enzyme of the electron transport chain present?

A) Outer mitochondrial membrane
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B) Inner mitochondrial membrane
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C) Endoplasmic reticulum membrane
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D) Cell membrane
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Question 3 of 13

3. Question

3. In which part of the cell does the electron transport chain take place?

A) Cytoplasm
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B) Nucleus
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C) Mitochondrial matrix
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D) Inner mitochondrial membrane
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Question 4 of 13

4. Question

4. Which statement best describes the electron transport chain?

A) Converts pyruvate to glucose
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B) Synthesizes ATP directly from ADP
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C) Transfers electrons through a series of protein complexes
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D) Breaks down fatty acids
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Question 5 of 13

5. Question

5. What reactant is used in the electron transport chain?

A) Glucose
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B) Oxygen
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C) Pyruvate
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D) NADH
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Question 6 of 13

6. Question

6. The electron transport chain pumps H+ ions into which location?

A) Mitochondrial matrix
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B) Intermembrane space
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C) Cytoplasm
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D) Nucleus
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Question 7 of 13

7. Question

7. In which membrane is the electron transport chain located?

A) Outer mitochondrial membrane
Correct Incorrect Correct answer

B) Inner mitochondrial membrane
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C) Endoplasmic reticulum membrane
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D) Cell membrane
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Question 8 of 13

8. Question

8. Which phrase best describes the electron transport chain in photosynthesis?

A) Calvin cycle
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B) Light-dependent reactions
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C) Citric acid cycle
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D) Glycolysis
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Question 9 of 13

9. Question

9. Carbon monoxide poisoning inhibits which complex in the electron transport chain?

A) Complex I
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B) Complex II
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C) Complex III
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D) Complex IV
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Question 10 of 13

10. Question

10. Where are the proteins of the electron transport chain located?

A) Mitochondrial matrix
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B) Inner mitochondrial membrane
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C) Cytoplasm
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D) Nucleus
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Question 11 of 13

11. Question

11. Which product of the electron transport chain reenters the Krebs cycle?

A) ATP
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B) NAD+
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C) FADH2
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D) Oxygen
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Question 12 of 13

12. Question

12. What is the final electron acceptor in the electron transport chain?

A) NAD+
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B) Oxygen
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C) FADH2
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D) ATP
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Question 13 of 13

13. Question

13. How many ATP are produced in the electron transport chain?

A) 2 ATP
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B) 4 ATP
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C) 6 ATP
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D) 32-34 ATP
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