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

Cofactor

Biochemistry

6. Enzymes and Enzyme Kinetics

Cofactor

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Multiple Choice

Which of the following options is false?

Metal ions can bind directly to enzymes or coenzymes.

Metal ions often act as cofactors.

Organic cofactors can be called coenzymes.

Metal ions can be prosthetic groups.

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Verified step by step guidance

Understand the role of metal ions in biochemistry: Metal ions are often involved in enzyme catalysis and can bind directly to enzymes or coenzymes, acting as essential cofactors.

Differentiate between cofactors and prosthetic groups: Cofactors are non-protein chemical compounds that are required for the protein's biological activity. They can be either organic molecules (coenzymes) or metal ions.

Define prosthetic groups: Prosthetic groups are tightly bound, specific non-polypeptide units required for the biological activity of some proteins. They are a type of cofactor that is permanently attached to the enzyme.

Analyze the statement 'Metal ions can be prosthetic groups': While metal ions can act as cofactors, they are not typically considered prosthetic groups because they are not permanently bound to the enzyme in the same way as organic prosthetic groups.

Conclude which statement is false: Based on the definitions and roles of metal ions, cofactors, and prosthetic groups, the statement 'Metal ions can be prosthetic groups' is false, as metal ions are not permanently attached to enzymes like prosthetic groups.