Table of contents

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

Fermentation & Anaerobic Respiration

Anatomy & Physiology

3. Energy & Cell Processes

Fermentation & Anaerobic Respiration

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Multiple Choice

In which of the steps of aerobic and anaerobic cellular respiration does substrate-level phosphorylation occur?

In glycolysis only.

In the Krebs cycle only.

In the electron transport chain only.

In both glycolysis and the Krebs cycle.

In both the Krebs cycle and the electron transport chain.

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Verified step by step guidance

Understand the concept of substrate-level phosphorylation: It is a type of metabolic reaction that results in the formation of ATP by the direct transfer of a phosphate group to ADP from a reactive intermediate.

Identify the stages of cellular respiration: Cellular respiration includes glycolysis, the Krebs cycle (also known as the citric acid cycle), and the electron transport chain.

Analyze glycolysis: During glycolysis, substrate-level phosphorylation occurs when a phosphate group is directly transferred from a substrate to ADP to form ATP. This happens twice per glucose molecule.

Examine the Krebs cycle: In the Krebs cycle, substrate-level phosphorylation occurs when a phosphate group is transferred to GDP to form GTP, which can then be converted to ATP.

Review the electron transport chain: The electron transport chain primarily involves oxidative phosphorylation, not substrate-level phosphorylation, as ATP is generated through a proton gradient and ATP synthase activity.