Table of contents

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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

23. The Digestive System

Introduction to the Digestive System

Anatomy & Physiology

23. The Digestive System

Introduction to the Digestive System

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Multiple Choice

Which enzyme breaks down protein-forming polypeptides in the stomach?

Lipase

Amylase

Trypsin

Pepsin

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Verified step by step guidance

Identify the location where the enzyme is active: The stomach is the primary site for the initial digestion of proteins.

Understand the role of enzymes in digestion: Enzymes are biological catalysts that speed up the breakdown of macromolecules like proteins into smaller units.

Recognize the specific enzyme responsible for protein digestion in the stomach: Pepsin is the enzyme that breaks down proteins into smaller peptides in the acidic environment of the stomach.

Differentiate between the enzymes listed: Lipase is involved in fat digestion, Amylase breaks down carbohydrates, and Trypsin is active in the small intestine, not the stomach.

Conclude that Pepsin is the correct enzyme for breaking down protein-forming polypeptides in the stomach, as it is specifically adapted to function in the stomach's acidic conditions.