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

An enzyme _____.

increases the equilibrium constant of a reaction

lowers the activation energy of a reaction

is consumed during the reaction

alters the overall free energy change (\(\Delta G\)) of a 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 by lowering the activation energy required for the reaction to proceed.

Clarify the concept of activation energy: Activation energy is the energy barrier that must be overcome for reactants to be converted into products. Enzymes lower this barrier, making the reaction occur more easily.

Examine the equilibrium constant and free energy change ( abla G): Enzymes do not change the equilibrium constant or the overall free energy change ( abla G) of a reaction. These properties are determined by the thermodynamics of the reaction itself.

Address the misconception about enzyme consumption: Enzymes are not consumed during the reaction. They remain unchanged and can be reused for multiple reaction cycles.

Conclude with the correct answer: The primary function of an enzyme is to lower the activation energy of a reaction, facilitating the conversion of reactants to products without altering the equilibrium constant or abla G.