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

Which of the following statements about NAD⁺ is true?

NAD⁺ is reduced to NADH during glycolysis, pyruvate oxidation, and the Krebs cycle.

NAD⁺ has more chemical energy than NADH.

NAD⁺ donates high energy electrons to the electron transport chain.

In the absence of NAD+, glycolysis can still function.

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Verified step by step guidance

Understand the role of NAD+ in cellular respiration: NAD+ is a coenzyme that functions as an electron carrier. It is crucial in the process of transferring electrons during metabolic reactions.

Identify the process of reduction: In biochemical terms, reduction refers to the gain of electrons. NAD+ is reduced to NADH by gaining electrons during glycolysis, pyruvate oxidation, and the Krebs cycle.

Compare the energy states: NADH is the reduced form of NAD+ and carries more energy because it has gained electrons. Therefore, NAD+ has less chemical energy compared to NADH.

Examine the role of NAD+ in the electron transport chain: NADH, not NAD+, donates high-energy electrons to the electron transport chain, which is essential for ATP production.

Consider the necessity of NAD+ for glycolysis: NAD+ is essential for glycolysis to proceed because it accepts electrons during the conversion of glucose to pyruvate. Without NAD+, glycolysis cannot continue efficiently.