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

Glycolysis

Anatomy & Physiology

3. Energy & Cell Processes

Glycolysis

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Multiple Choice

How many net ATP and NADH molecules are produced from one molecule of glucose during glycolysis?

2 ATP and 2 NADH

2 ATP and 4 NADH

4 ATP and 4 NADH

4 ATP and 2 NADH

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Verified step by step guidance

Understand that glycolysis is the process of breaking down one molecule of glucose (C₆H₁₂O₆) into two molecules of pyruvate (C₃H₄O₃) in the cytoplasm of the cell.

Recognize that glycolysis consists of 10 steps, which can be divided into two phases: the energy investment phase and the energy payoff phase.

In the energy investment phase, 2 ATP molecules are used to phosphorylate glucose and its intermediates, preparing them for subsequent breakdown.

In the energy payoff phase, 4 ATP molecules are produced through substrate-level phosphorylation, and 2 NAD⁺ molecules are reduced to 2 NADH molecules as electrons are transferred from intermediates.

Calculate the net gain of ATP by subtracting the 2 ATP used in the investment phase from the 4 ATP produced in the payoff phase, resulting in a net gain of 2 ATP. Additionally, note the production of 2 NADH molecules during glycolysis.