Table of contents

1. Introduction to Anatomy & Physiology5h 42m
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 Heart2h 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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Problem 4

Textbook Question

Which of the following is a false statement regarding enzymes?a. Enzymes are proteins that speed up metabolic reactions;b. Enzymes have specific substrates;c. Enzymes supply ATP to their substrates;d. An enzyme may be used many times.

Verified step by step guidance

Identify the general function of enzymes in biological systems, which is to act as catalysts that speed up chemical reactions without being consumed in the process.

Understand that enzymes are highly specific, meaning each enzyme typically acts on a specific substrate, a substance that the enzyme helps transform.

Review the role of ATP (adenosine triphosphate) in cellular processes. ATP is a molecule that provides energy for various cellular activities, but it is not supplied by enzymes to their substrates.

Analyze each statement provided in the question to determine which one does not accurately describe the properties or functions of enzymes.

Conclude which statement is false based on the fundamental roles and characteristics of enzymes.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Enzyme Function

Enzymes are biological catalysts that accelerate chemical reactions in living organisms. They lower the activation energy required for reactions, allowing metabolic processes to occur more efficiently. This function is crucial for maintaining life, as many biochemical reactions would be too slow without enzymes.

Substrate Specificity

Enzymes exhibit specificity for their substrates, meaning each enzyme typically catalyzes a specific reaction with a particular substrate. This specificity is due to the unique shape and chemical properties of the enzyme's active site, which only fits certain substrate molecules, ensuring precise biochemical interactions.

Enzyme Recycling

Enzymes are not consumed in the reactions they catalyze; instead, they can be reused multiple times. After facilitating a reaction, an enzyme returns to its original state, ready to bind to new substrate molecules. This property makes enzymes highly efficient and vital for sustaining metabolic pathways.