1. Introduction to Anatomy & Physiology5h 40m
2. Cell Chemistry & Cell Components12h 37m
3. Energy & Cell Processes10h 7m
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 Blood1h 22m
18. The Heart1h 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 Balance Coming soon
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity Coming soon

3. Energy & Cell Processes

Enzyme Binding Factors

Anatomy & Physiology

3. Energy & Cell Processes

Enzyme Binding Factors

Previous problemNext problem

Problem 5b

Textbook Question

Enzymes speed up chemical reactions by . a. heating cells; b. binding to substrates and placing stress on their bonds; c. changing the shape of the cell; d. supplying energy to the substrate

Verified step by step guidance

Identify the role of enzymes in chemical reactions. Enzymes act as biological catalysts.

Understand that enzymes work by binding to substrates. The image shows an enzyme (A) with substrates (B) bound to its active site.

Recognize that enzymes place stress on the bonds of the substrates. This stress helps to lower the activation energy required for the reaction.

Analyze the options provided: heating cells, binding to substrates and placing stress on their bonds, changing the shape of the cell, and supplying energy to the substrate.

Conclude that the correct answer is the option that describes the enzyme's function of binding to substrates and placing stress on their bonds.

Was this helpful?

Key Concepts

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

Enzyme-Substrate Interaction

Enzymes are biological catalysts that speed up chemical reactions by binding to specific substrates. This interaction occurs at the enzyme's active site, where the substrate fits like a key in a lock. The binding induces a change in the enzyme's shape, facilitating the conversion of substrates into products.

Activation Energy

Activation energy is the minimum energy required for a chemical reaction to occur. Enzymes lower this energy barrier, allowing reactions to proceed more quickly and efficiently. By stabilizing the transition state, enzymes make it easier for substrates to react, thus speeding up the overall reaction rate.

Induced Fit Model

The induced fit model describes how enzymes change shape upon substrate binding. Unlike the lock-and-key model, which suggests a perfect fit, the induced fit model emphasizes that the enzyme's active site molds itself around the substrate. This dynamic interaction enhances the enzyme's ability to catalyze reactions by stressing certain bonds within the substrate.