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

Which statement about coenzymes is FALSE?

Coenzymes often act as carriers for chemical groups or electrons during enzymatic reactions.

Many vitamins serve as precursors for coenzymes.

Coenzymes are permanently bound to enzymes and never dissociate.

Coenzymes are organic molecules required for the activity of certain enzymes.

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Verified step by step guidance

Understand the role of coenzymes: Coenzymes are organic molecules that assist enzymes in catalyzing reactions. They often act as carriers for chemical groups or electrons, facilitating the enzymatic process.

Recognize the relationship between vitamins and coenzymes: Many vitamins, such as B vitamins, serve as precursors for coenzymes. For example, vitamin B3 is a precursor for NAD+ (a coenzyme).

Clarify the binding nature of coenzymes: Coenzymes are not permanently bound to enzymes. They can associate and dissociate from the enzyme during the reaction cycle, which allows them to participate in multiple reactions.

Evaluate the given statements: The statement 'Coenzymes are permanently bound to enzymes and never dissociate' is false because coenzymes are typically transiently bound and can dissociate after the reaction is complete.

Conclude the analysis: Based on the above understanding, identify the false statement as the one describing coenzymes as permanently bound to enzymes, which contradicts their actual behavior.