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

Which of the following is the enzyme that breaks down acetylcholine in the synaptic cleft?

Monoamine oxidase

Adenylate cyclase

Catechol-O-methyltransferase

Acetylcholinesterase

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Verified step by step guidance

Understand the role of acetylcholine in the synaptic cleft: Acetylcholine is a neurotransmitter that facilitates communication between neurons at synapses.

Identify the function of enzymes in neurotransmitter breakdown: Enzymes are biological catalysts that speed up chemical reactions, including the breakdown of neurotransmitters.

Recognize the specific enzyme responsible for breaking down acetylcholine: Acetylcholinesterase is the enzyme that hydrolyzes acetylcholine into acetate and choline, terminating the signal transmission.

Differentiate acetylcholinesterase from other enzymes listed: Monoamine oxidase breaks down monoamines, adenylate cyclase is involved in cyclic AMP production, and catechol-O-methyltransferase metabolizes catecholamines.

Conclude that acetylcholinesterase is the correct enzyme for breaking down acetylcholine in the synaptic cleft, ensuring proper synaptic function.