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

Enzymes

Biochemistry

6. Enzymes and Enzyme Kinetics

Enzymes

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Multiple Choice

Enzymes catalyze reactions by __________.

changing the equilibrium constant of the reaction

providing energy for the reaction

increasing the temperature of the reaction

lowering the activation energy of the reaction

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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 in the process.

Recall the concept of activation energy: Activation energy is the minimum energy required for reactants to transform into products during a chemical reaction.

Recognize how enzymes function: Enzymes lower the activation energy by stabilizing the transition state, making it easier for the reaction to proceed.

Clarify what enzymes do not do: Enzymes do not change the equilibrium constant, provide energy for the reaction, or increase the temperature of the reaction. They only affect the rate of the reaction by lowering the activation energy.

Conclude that the correct answer is 'lowering the activation energy of the reaction,' as this is the primary mechanism by which enzymes catalyze reactions.