Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 39m
3. Energy & Cell Processes10h 8m
4. Tissues & Histology10h 3m
5. Integumentary System2h 28m
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 System3h 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

Types of Phosphorylation

Anatomy & Physiology

3. Energy & Cell Processes

Types of Phosphorylation

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Multiple Choice

Substrate-level phosphorylation is utilized to create ATP in which steps of aerobic cellular respiration?
a) Electron Transport Chain and Chemiosmosis.
b) Glycolysis and Pyruvate Oxidation.
c) Pyruvate Oxidation and Krebs cycle.
d) Glycolysis and Krebs cycle.

Electron Transport Chain and Chemiosmosis.

Glycolysis and Pyruvate Oxidation.

Pyruvate Oxidation and Krebs cycle.

Glycolysis and Krebs cycle.

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Verified step by step guidance

Understand that substrate-level phosphorylation is a process of ATP generation that occurs directly in the metabolic pathway by transferring a phosphate group to ADP from a phosphorylated intermediate.

Recognize that substrate-level phosphorylation occurs in the cytoplasm during glycolysis and in the mitochondrial matrix during the Krebs cycle.

Recall that glycolysis is the first stage of cellular respiration, where glucose is broken down into pyruvate, and ATP is produced through substrate-level phosphorylation.

Identify that the Krebs cycle, also known as the citric acid cycle, is the second stage of cellular respiration, where acetyl-CoA is oxidized, and ATP is again produced through substrate-level phosphorylation.

Note that the Electron Transport Chain and Chemiosmosis involve oxidative phosphorylation, not substrate-level phosphorylation, which is why they are not the correct answer for this question.