Table of contents

Skip topic navigation

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

3. Energy & Cell Processes

Electron Transport Chain

Anatomy & Physiology

3. Energy & Cell Processes

Electron Transport Chain

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following events takes place in the electron transport chain?

The breakdown of glucose into six carbon dioxide molecules.

The breakdown of NADH and FADH2 to carbon dioxide.

Harnessing energy from high-energy electrons derived from glycolysis, pyruvate oxidation, and the Krebs cycle.

Substrate-level phosphorylation.

Previous problemNext problem

Verified step by step guidance

Understand that the electron transport chain (ETC) is the final stage of cellular respiration, occurring in the inner mitochondrial membrane.

Recognize that the primary function of the ETC is to transfer electrons from NADH and FADH2 to oxygen, which is the final electron acceptor.

Identify that as electrons move through the chain, they release energy, which is used to pump protons (H+) across the mitochondrial membrane, creating a proton gradient.

Acknowledge that this proton gradient is used by ATP synthase to produce ATP from ADP and inorganic phosphate, a process known as oxidative phosphorylation.

Note that the breakdown of glucose into carbon dioxide occurs earlier in cellular respiration, specifically during glycolysis and the Krebs cycle, not in the ETC.