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

Enzyme-Substrate Complex

Biochemistry

6. Enzymes and Enzyme Kinetics

Enzyme-Substrate Complex

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Multiple Choice

Which best describes the action of carbonic anhydrase?

It catalyzes the reversible conversion of carbon dioxide and water to bicarbonate and protons.

It oxidizes NADH to NAD\(^+\) in the electron transport chain.

It hydrolyzes peptide bonds in proteins.

It phosphorylates glucose to form glucose-6-phosphate.

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Verified step by step guidance

Step 1: Understand the role of carbonic anhydrase. Carbonic anhydrase is an enzyme that catalyzes the reversible reaction between carbon dioxide (CO extsubscript{2}) and water (H extsubscript{2}O) to form bicarbonate (HCO extsubscript{3} extsuperscript{-}) and protons (H extsuperscript{+}). This reaction is crucial for maintaining acid-base balance in the body.

Step 2: Analyze the given options. The first option describes the reversible conversion of carbon dioxide and water to bicarbonate and protons, which matches the known function of carbonic anhydrase. The other options describe unrelated enzymatic activities.

Step 3: Eliminate incorrect options. Carbonic anhydrase does not oxidize NADH to NAD extsuperscript{+} (a function of enzymes in the electron transport chain), hydrolyze peptide bonds (a function of proteases), or phosphorylate glucose to form glucose-6-phosphate (a function of hexokinase).

Step 4: Confirm the correct answer. The correct description of carbonic anhydrase's action is its role in catalyzing the reversible conversion of carbon dioxide and water to bicarbonate and protons.

Step 5: Relate this to physiological importance. Carbonic anhydrase plays a key role in processes such as respiration, pH regulation, and transport of CO extsubscript{2} in the blood, highlighting its significance in biochemistry.