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

Introduction to Cellular Respiration

Anatomy & Physiology

3. Energy & Cell Processes

Introduction to Cellular Respiration

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Multiple Choice

What is the primary energy source during high-intensity exercise?

Oxidative phosphorylation

Photophosphorylation

Glycogenolysis

Substrate-level phosphorylation

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Verified step by step guidance

Understand the context of high-intensity exercise: During high-intensity exercise, the body requires rapid energy production to sustain muscle contractions.

Identify the energy systems involved: The body uses different energy systems depending on the intensity and duration of exercise. For high-intensity exercise, the immediate energy system is crucial.

Explore substrate-level phosphorylation: This process occurs in the cytoplasm and involves the direct transfer of a phosphate group to ADP to form ATP, without the need for oxygen. It is a quick way to generate energy.

Compare with oxidative phosphorylation: Oxidative phosphorylation occurs in the mitochondria and requires oxygen. It is slower and more suited for prolonged, lower-intensity activities.

Conclude why substrate-level phosphorylation is the primary source: During high-intensity exercise, the rapid energy demand is met by substrate-level phosphorylation, which provides immediate ATP without relying on oxygen.