Table of contents

1. Introduction to Anatomy & Physiology5h 40m
2. Cell Chemistry & Cell Components12h 37m
3. Energy & Cell Processes10h 7m
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 Blood1h 22m
18. The Heart1h 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 Balance Coming soon
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity Coming soon

3. Energy & Cell Processes

Introduction to Cellular Respiration

Anatomy & Physiology

3. Energy & Cell Processes

Introduction to Cellular Respiration

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Multiple Choice

Based on the map of cellular respiration, why do we need to breathe in oxygen?
a) Oxygen is the final electron acceptor for lactic acid fermentation.
b) Oxygen is the final electron acceptor for alcohol fermentation.
c) Oxygen is the final electron acceptor for aerobic cellular respiration.
d) Oxygen is not important for the purposes of cellular respiration.

Oxygen is the final electron acceptor for lactic acid fermentation.

Oxygen is the final electron acceptor for alcohol fermentation.

Oxygen is the final electron acceptor for aerobic cellular respiration.

Oxygen is not important for the purposes of cellular respiration.

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Verified step by step guidance

Understand the role of oxygen in cellular respiration: Oxygen is crucial in the process of aerobic cellular respiration, which occurs in the mitochondria of cells.

Identify the stages of aerobic cellular respiration: The process includes glycolysis, the citric acid cycle (Krebs cycle), and the electron transport chain (ETC).

Focus on the electron transport chain (ETC): This is the final stage of aerobic respiration where most of the ATP is produced.

Recognize the role of oxygen in the ETC: Oxygen acts as the final electron acceptor at the end of the electron transport chain. It combines with electrons and protons to form water.

Conclude why oxygen is essential: Without oxygen, the electron transport chain cannot function, halting ATP production and making oxygen indispensable for efficient energy production in aerobic respiration.