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 is a characteristic shared by both amylase and pepsin?

They are both produced in the pancreas.

They both function as digestive enzymes.

They both hydrolyze proteins into amino acids.

They are both most active at highly acidic pH.

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Verified step by step guidance

Understand the role of amylase and pepsin: Amylase is an enzyme that breaks down carbohydrates (specifically starches) into simpler sugars, while pepsin is an enzyme that breaks down proteins into smaller peptides.

Identify the shared characteristic: Both amylase and pepsin are digestive enzymes, meaning they catalyze the breakdown of macromolecules into smaller units that can be absorbed by the body.

Analyze the incorrect options: Amylase is produced in the pancreas and salivary glands, while pepsin is produced in the stomach. Therefore, the statement 'They are both produced in the pancreas' is incorrect.

Evaluate the pH activity: Amylase functions optimally at a neutral to slightly alkaline pH (around pH 7-8), while pepsin is most active at a highly acidic pH (around pH 1-2). Thus, the statement 'They are both most active at highly acidic pH' is incorrect.

Clarify the hydrolysis function: Amylase hydrolyzes carbohydrates, not proteins, while pepsin hydrolyzes proteins into peptides, not amino acids directly. Therefore, the statement 'They both hydrolyze proteins into amino acids' is incorrect.