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

What happens to an enzyme once it has finished catalyzing a reaction?

The enzyme is released unchanged and can catalyze another reaction.

The enzyme is consumed as a reactant in the reaction.

The enzyme becomes part of the product formed.

The enzyme is permanently altered and cannot be reused.

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Verified step by step guidance

Understand the role of enzymes in biochemical reactions: Enzymes are biological catalysts that speed up reactions without being consumed or permanently altered in the process.

Recall the principle of enzyme functionality: Enzymes lower the activation energy required for a reaction, allowing it to proceed more efficiently, but they remain unchanged after the reaction is complete.

Analyze the options provided: Evaluate each statement to determine which aligns with the fundamental properties of enzymes. For example, enzymes are not consumed as reactants, nor do they become part of the product.

Focus on the correct characteristic: Enzymes are reusable and can catalyze multiple reactions as long as the substrate and conditions are appropriate.

Conclude based on the evidence: The correct answer is that the enzyme is released unchanged and can catalyze another reaction, as this matches the established biochemical understanding of enzyme behavior.