Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

6. Enzymes and Enzyme Kinetics

Enzyme-Substrate Complex

Biochemistry

6. Enzymes and Enzyme Kinetics

Enzyme-Substrate Complex

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Multiple Choice

Which of the following best describes the active site of an enzyme and its primary function?

The active site is a specific region on the enzyme where the substrate binds, allowing the enzyme to catalyze a chemical reaction.

The active site is a region on the enzyme responsible for its structural stability, but not involved in catalysis.

The active site is a region on the substrate that binds to the enzyme, preventing the reaction from occurring.

The active site is a non-specific area on the enzyme that binds to any molecule, leading to enzyme inhibition.

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Verified step by step guidance

Understand the concept of an enzyme's active site: The active site is a specific region on the enzyme where the substrate binds. This binding is highly specific and is often compared to a 'lock and key' model, where the enzyme (lock) fits perfectly with the substrate (key).

Recognize the primary function of the active site: The active site facilitates the catalysis of a chemical reaction by stabilizing the transition state and lowering the activation energy required for the reaction to proceed.

Eliminate incorrect options: Analyze each provided answer choice. For example, the active site is not responsible solely for structural stability, nor is it a region on the substrate. Additionally, it is not a non-specific area that binds to any molecule indiscriminately.

Focus on the correct description: The correct answer should emphasize the specificity of the active site and its role in binding the substrate to catalyze a chemical reaction.

Conclude with the correct understanding: The active site is a specific region on the enzyme where the substrate binds, allowing the enzyme to catalyze a chemical reaction. This is the most accurate description of the active site's function.