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 environmental factors can most directly affect the functioning of an enzyme?

pH and temperature

Light intensity

Magnetic field strength

Atmospheric pressure

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Verified step by step guidance

Understand that enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy. Their activity is highly sensitive to environmental conditions.

Recall that the structure and function of enzymes are dependent on their three-dimensional shape, which can be altered by changes in environmental factors such as pH and temperature.

Explain that pH affects the ionization of amino acid side chains in the enzyme's active site, potentially disrupting substrate binding or the enzyme's overall structure.

Discuss how temperature influences enzyme activity by affecting molecular motion. Moderate increases in temperature can enhance reaction rates, but excessive heat can denature the enzyme, rendering it inactive.

Conclude that while light intensity, magnetic field strength, and atmospheric pressure may influence other biological processes, they do not directly affect enzyme function in the same way that pH and temperature do.