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

Krebs Cycle

Anatomy & Physiology

3. Energy & Cell Processes

Krebs Cycle

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Multiple Choice

What happens to the products of the Krebs cycle?

They are excreted as waste products.

They are directly used to synthesize glucose.

They are stored as glycogen in the liver.

They are converted into ATP through oxidative phosphorylation.

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Verified step by step guidance

Begin by understanding the Krebs cycle, also known as the citric acid cycle, which is a series of chemical reactions used by all aerobic organisms to generate energy through the oxidation of acetate derived from carbohydrates, fats, and proteins into carbon dioxide.

Recognize that the primary products of the Krebs cycle include NADH and FADH2, which are high-energy electron carriers, as well as ATP, carbon dioxide, and water.

Learn that NADH and FADH2 produced in the Krebs cycle are crucial for the next stage of cellular respiration, known as oxidative phosphorylation, which occurs in the mitochondria.

Understand that during oxidative phosphorylation, NADH and FADH2 donate electrons to the electron transport chain, a series of proteins embedded in the inner mitochondrial membrane.

Finally, realize that the energy released from electrons moving through the electron transport chain is used to pump protons across the mitochondrial membrane, creating a proton gradient that drives the synthesis of ATP from ADP and inorganic phosphate via ATP synthase.