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

Enzymes

Anatomy & Physiology

3. Energy & Cell Processes

Enzymes

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Multiple Choice

What enzyme found within the peroxisome functions to degrade hydrogen peroxide?

Lipase

Catalase

Pepsin

Amylase

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Verified step by step guidance

Understand the function of peroxisomes: Peroxisomes are small, membrane-bound organelles found in the cytoplasm of eukaryotic cells. They play a key role in lipid metabolism and the detoxification of harmful substances, including hydrogen peroxide.

Identify the harmful substance: Hydrogen peroxide (H₂O₂) is a byproduct of various metabolic reactions within the cell. It is potentially harmful due to its ability to form free radicals, which can damage cellular components.

Recognize the enzyme responsible for detoxification: Catalase is the enzyme found in peroxisomes that catalyzes the decomposition of hydrogen peroxide into water (H₂O) and oxygen (O₂), thereby neutralizing its harmful effects.

Differentiate between the enzymes listed: Lipase, pepsin, and amylase are enzymes with different functions. Lipase breaks down fats, pepsin digests proteins in the stomach, and amylase breaks down carbohydrates. None of these enzymes are involved in the degradation of hydrogen peroxide.

Conclude with the correct enzyme: Based on the function of catalase and its presence in peroxisomes, it is the enzyme responsible for degrading hydrogen peroxide, not lipase, pepsin, or amylase.