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 Heart2h 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

Which of the following is a correct description of the events of cellular respiration in proper sequence?

Oxidation of glucose to pyruvate; reduction of pyruvate; citric acid cycle; oxidative phosphorylation

Glycolysis; reduction of pyruvate; citric acid cycle; oxidative phosphorylation

Glycolysis; oxidative phosphorylation; citric acid cycle; oxidation of pyruvate

Oxidation of pyruvate; citric acid cycle; oxidation of glucose to pyruvate; oxidative phosphorylation

Oxidation of glucose to pyruvate; oxidation of pyruvate; citric acid cycle; oxidative phosphorylation

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Verified step by step guidance

Begin by understanding the overall process of cellular respiration, which is the method by which cells convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.

The first step in cellular respiration is Glycolysis, where glucose is oxidized to form pyruvate. This process occurs in the cytoplasm and does not require oxygen.

Next, the pyruvate undergoes oxidation to form Acetyl-CoA. This step is crucial as it links glycolysis to the citric acid cycle and occurs in the mitochondria.

The Acetyl-CoA then enters the Citric Acid Cycle (also known as the Krebs cycle), where it is further oxidized, and high-energy electron carriers NADH and FADH2 are produced.

Finally, oxidative phosphorylation occurs in the mitochondria, where the electron transport chain uses the electrons from NADH and FADH2 to create a proton gradient that drives the synthesis of ATP.