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 vitamin is a component of flavoproteins, functioning as a coenzyme in redox reactions?

Vitamin B1 (Thiamine)

Vitamin B12 (Cobalamin)

Vitamin B6 (Pyridoxine)

Vitamin B2 (Riboflavin)

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Verified step by step guidance

Understand the role of flavoproteins: Flavoproteins are enzymes that contain a flavin molecule (derived from riboflavin) and are involved in redox reactions, which are chemical processes involving the transfer of electrons.

Identify the coenzyme associated with flavoproteins: Flavoproteins use flavin adenine dinucleotide (FAD) or flavin mononucleotide (FMN) as coenzymes, both of which are derived from Vitamin B2 (Riboflavin).

Review the function of Vitamin B2 (Riboflavin): Riboflavin is essential for the synthesis of FAD and FMN, which are critical for electron transport in metabolic pathways such as the citric acid cycle and oxidative phosphorylation.

Compare the options provided: Vitamin B1 (Thiamine) is involved in decarboxylation reactions, Vitamin B12 (Cobalamin) is involved in methylation and isomerization reactions, and Vitamin B6 (Pyridoxine) is involved in amino acid metabolism. None of these are directly related to flavoproteins or redox reactions.

Conclude that Vitamin B2 (Riboflavin) is the correct answer because it is the precursor for FAD and FMN, which are integral components of flavoproteins functioning in redox reactions.