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

Specific substrates bind to which of the following parts of an enzyme?

Allosteric site

Regulatory domain

Cofactor binding site

Active site

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Verified step by step guidance

Understand the role of an enzyme: Enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy. They achieve this by binding to specific substrates.

Learn about the active site: The active site is the region of the enzyme where the substrate binds. It has a specific shape and chemical properties that match the substrate, allowing for a precise fit (often described as a 'lock and key' model or 'induced fit' model).

Differentiate the active site from other parts of the enzyme: The allosteric site is a separate region where molecules can bind to regulate enzyme activity, but it does not directly bind the substrate. The regulatory domain and cofactor binding site are also distinct regions that serve other functions, such as modulating activity or binding non-protein molecules required for enzyme function.

Recognize the specificity of substrate binding: Substrates bind to the active site due to complementary shape, charge, and hydrophobic/hydrophilic interactions. This specificity ensures that enzymes catalyze only particular reactions.

Conclude that the correct answer is the active site: Based on the explanation above, the active site is the part of the enzyme where specific substrates bind to undergo a chemical reaction.