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 statements about enzyme function is correct?

Enzymes can greatly speed up reactions, but they cannot change the net energy output because they cannot change the activation energy.

Enzymes can change the equilibrium point of reactions, but they cannot speed up reactions because they cannot change the net energy output.

Enzymes can greatly speed up reactions, but they cannot change the activation energy because they cannot change the net energy output.

None of the listed responses is correct.

Enzymes can lower the activation energy of reactions, but they cannot change the equilibrium point because they cannot change the net energy output.

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Verified step by step guidance

Understand that enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy required for the reaction to proceed.

Recognize that while enzymes lower the activation energy, they do not alter the overall energy change (net energy output) of the reaction. This means the energy released or absorbed by the reaction remains the same.

Know that enzymes do not change the equilibrium point of a reaction. The equilibrium point is determined by the relative energies of the reactants and products, which are not affected by the presence of an enzyme.

Identify that the correct statement about enzyme function is that they can lower the activation energy of reactions, thereby speeding them up, but they cannot change the equilibrium point or the net energy output.

Conclude that the correct answer is: 'Enzymes can lower the activation energy of reactions, but they cannot change the equilibrium point because they cannot change the net energy output.'