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

Phosphatase enzymes in signal transduction pathways function primarily to:

Add phosphate groups to proteins

Hydrolyze peptide bonds in proteins

Remove phosphate groups from proteins

Transfer methyl groups to DNA

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Verified step by step guidance

Understand the role of phosphatase enzymes: Phosphatases are enzymes that catalyze the removal of phosphate groups from molecules, typically proteins, through hydrolysis. This process is crucial in regulating signal transduction pathways.

Differentiate phosphatases from kinases: Kinases are enzymes that add phosphate groups to proteins, while phosphatases remove them. This distinction is important for understanding their opposing roles in cellular signaling.

Analyze the options provided: Evaluate each option based on the known function of phosphatases. For example, adding phosphate groups is the role of kinases, not phosphatases. Hydrolyzing peptide bonds is unrelated to phosphate group removal, and transferring methyl groups to DNA is a function of methyltransferases, not phosphatases.

Focus on the correct function: Phosphatases specifically remove phosphate groups from proteins, which can deactivate or alter the activity of the protein in signal transduction pathways.

Conclude the correct answer: Based on the analysis, the correct answer is 'Remove phosphate groups from proteins,' as this aligns with the established biochemical role of phosphatase enzymes.