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

A(n) ___ reduces the amount of activation energy needed for chemical reactions.

cofactor

inhibitor

enzyme

substrate

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Verified step by step guidance

Understand the concept of activation energy: Activation energy is the minimum energy required for a chemical reaction to proceed. Lowering this energy makes reactions occur more easily and quickly.

Learn the role of enzymes: Enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy required for the reaction to occur.

Differentiate between the given options: Cofactors are non-protein molecules that assist enzymes in their function, inhibitors block or slow down enzyme activity, and substrates are the molecules upon which enzymes act. None of these directly reduce activation energy like enzymes do.

Recognize the correct answer: Enzymes are the correct choice because they directly reduce the activation energy needed for chemical reactions, facilitating the process.

Apply this knowledge to similar problems: Whenever asked about reducing activation energy in biochemical reactions, enzymes are typically the answer due to their catalytic properties.