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 of the following best describes the biological function of enzymes?

They store genetic information in the form of DNA.

They transport oxygen in the bloodstream.

They serve as structural components of cell membranes.

They act as biological catalysts to speed up chemical reactions.

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Verified step by step guidance

Understand the role of enzymes in biological systems: Enzymes are specialized proteins that act as biological catalysts, meaning they speed up chemical reactions without being consumed in the process.

Compare the given options to the known functions of enzymes: Enzymes do not store genetic information (this is the role of DNA and RNA), nor do they transport oxygen (this is the role of hemoglobin), nor do they serve as structural components of cell membranes (this is the role of lipids and proteins).

Focus on the correct function: Enzymes lower the activation energy required for chemical reactions, allowing them to proceed more efficiently and rapidly under physiological conditions.

Recognize the importance of enzymes in metabolism: Enzymes are involved in processes such as digestion, energy production, and synthesis of biomolecules, making them essential for life.

Conclude that the correct description of enzymes is: 'They act as biological catalysts to speed up chemical reactions.' This aligns with their primary biological function.