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

How are enzymes able to speed up biochemical reactions?

By increasing the temperature of the reaction environment

By changing the equilibrium constant of the reaction

By lowering the activation energy required for the reaction to proceed

By providing additional reactants to 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.

Learn about activation energy: Activation energy is the minimum energy required for reactants to transform into products. Enzymes lower this energy barrier, making it easier for the reaction to proceed.

Clarify why enzymes do not change the equilibrium constant: Enzymes accelerate the rate at which equilibrium is reached but do not alter the equilibrium constant itself, as they do not change the overall energy difference between reactants and products.

Recognize that enzymes do not increase temperature or provide additional reactants: Enzymes work by stabilizing the transition state and lowering activation energy, not by altering external conditions or adding reactants.

Conclude that enzymes speed up reactions by lowering the activation energy required for the reaction to proceed, which is the correct answer in this case.