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

Hexokinase uses ATP to convert glucose into glucose-6-phosphate during glycolysis. Which option is true?

Hexokinase is a fibrous protein.

Hexokinase is permanently altered in the enzymatic reaction.

Hexokinase is a molecular catalyst.

Hexokinase & all enzymes are proteins.

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Verified step by step guidance

Understand the role of hexokinase in glycolysis: Hexokinase is an enzyme that catalyzes the phosphorylation of glucose to form glucose-6-phosphate, using ATP as a phosphate donor.

Recognize the nature of enzymes: Enzymes are biological catalysts that speed up chemical reactions without being consumed or permanently altered in the process.

Identify the structural classification of hexokinase: Hexokinase is a globular protein, not a fibrous protein. Globular proteins are typically involved in metabolic functions, whereas fibrous proteins provide structural support.

Clarify the statement about hexokinase being a molecular catalyst: As an enzyme, hexokinase functions as a molecular catalyst, facilitating the conversion of substrates into products without undergoing permanent changes itself.

Confirm the general characteristic of enzymes: All enzymes, including hexokinase, are proteins that act as catalysts in biochemical reactions, highlighting their importance in metabolic pathways.