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

Zymogens

Biochemistry

7. Enzyme Inhibition and Regulation

Zymogens

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Multiple Choice

Which of the following best describes a zymogen?

A coenzyme that assists in enzyme catalysis

A fully active enzyme that catalyzes metabolic reactions

A small molecule that inhibits enzyme activity

An inactive precursor of an enzyme that requires a biochemical change to become active

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Verified step by step guidance

Understand the term 'zymogen': A zymogen is an inactive precursor of an enzyme that requires a biochemical change, such as cleavage of specific peptide bonds, to become active.

Recognize that zymogens are important in regulating enzyme activity, especially in processes where premature activation could be harmful, such as digestion or blood clotting.

Differentiate zymogens from other terms in the options: A coenzyme is a non-protein molecule that assists enzymes in catalysis, while a fully active enzyme is already functional and does not require activation. A small molecule inhibitor reduces enzyme activity but is not related to zymogens.

Identify examples of zymogens in biochemistry, such as pepsinogen (inactive precursor of pepsin) or trypsinogen (inactive precursor of trypsin), which are activated by specific biochemical changes.

Conclude that the correct description of a zymogen is 'An inactive precursor of an enzyme that requires a biochemical change to become active,' as this aligns with its definition and function in biochemistry.