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 do enzymes speed up chemical reactions? Enzymes:

Change the equilibrium position of the reaction

Increase the temperature of the reaction environment

Lower the activation energy required for the reaction to proceed

Provide additional reactants for the reaction

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Verified step by step guidance

Understand the role of enzymes: Enzymes are biological catalysts that speed up chemical reactions without being consumed in the process. They achieve this by lowering the activation energy required for the reaction to proceed.

Define activation energy: Activation energy is the minimum energy required for reactants to transform into products. Enzymes reduce this energy barrier, making it easier for the reaction to occur under physiological conditions.

Explain the mechanism: Enzymes bind to reactants (substrates) at their active site, forming an enzyme-substrate complex. This stabilizes the transition state and reduces the energy needed to reach it.

Clarify equilibrium: Enzymes do not change the equilibrium position of a reaction. They only speed up the rate at which equilibrium is reached by facilitating the forward and reverse reactions equally.

Address other options: Enzymes do not increase the temperature of the reaction environment or provide additional reactants. Their primary function is to lower activation energy, enabling reactions to occur more efficiently.