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 reactions is catalyzed by the enzyme acid phosphatase?

Hydrolysis of peptide bonds in proteins

Hydrolysis of phosphate esters to release inorganic phosphate and an alcohol

Conversion of glucose to glucose-6-phosphate

Oxidation of succinate to fumarate

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Verified step by step guidance

Step 1: Understand the role of acid phosphatase. Acid phosphatase is an enzyme that catalyzes the hydrolysis of phosphate esters, breaking them down into inorganic phosphate and an alcohol. This reaction typically occurs in acidic conditions.

Step 2: Analyze the given options. The first option, 'Hydrolysis of peptide bonds in proteins,' refers to proteolytic enzymes like proteases, not acid phosphatase. The second option, 'Hydrolysis of phosphate esters to release inorganic phosphate and an alcohol,' matches the function of acid phosphatase. The third option, 'Conversion of glucose to glucose-6-phosphate,' is catalyzed by hexokinase, not acid phosphatase. The fourth option, 'Oxidation of succinate to fumarate,' is catalyzed by succinate dehydrogenase, not acid phosphatase.

Step 3: Focus on the correct reaction. Acid phosphatase specifically targets phosphate esters, cleaving the bond between the phosphate group and the alcohol group to release inorganic phosphate (Pi) and an alcohol molecule.

Step 4: Write the general chemical reaction catalyzed by acid phosphatase. The reaction can be represented as:

R_{O} - {PO}_{4} - 2 + H 2 O \to R_{OH} + {PO}_{4} - 3

, where R represents the organic group attached to the phosphate ester.

Step 5: Conclude that the correct answer is 'Hydrolysis of phosphate esters to release inorganic phosphate and an alcohol,' as this reaction aligns with the enzymatic activity of acid phosphatase.