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

7. Enzyme Inhibition and Regulation

Enzyme Inhibition

Biochemistry

7. Enzyme Inhibition and Regulation

Enzyme Inhibition

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Multiple Choice

Which of the following statements regarding enzymes is FALSE?

Most enzymes are proteins.

Enzyme activity can be regulated by inhibitors.

Enzymes are consumed during the reactions they catalyze.

Enzymes increase the rate of chemical reactions by lowering the activation energy.

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Verified step by step guidance

Step 1: Begin by understanding the role of enzymes in biochemical reactions. Enzymes are biological catalysts that speed up reactions without being consumed in the process. This is a key property of enzymes.

Step 2: Analyze the first statement: 'Most enzymes are proteins.' This is true because the majority of enzymes are composed of proteins, although some RNA molecules (ribozymes) can also act as enzymes.

Step 3: Evaluate the second statement: 'Enzyme activity can be regulated by inhibitors.' This is correct, as inhibitors can bind to enzymes and reduce their activity, either reversibly or irreversibly.

Step 4: Examine the third statement: 'Enzymes are consumed during the reactions they catalyze.' This is false because enzymes are not consumed; they remain unchanged after the reaction and can be reused for subsequent reactions.

Step 5: Assess the fourth statement: 'Enzymes increase the rate of chemical reactions by lowering the activation energy.' This is true, as enzymes function by reducing the energy barrier required for a reaction to proceed, thereby increasing the reaction rate.