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 best describes the function of a ligase enzyme?

It catalyzes the transfer of functional groups between molecules.

It catalyzes the oxidation-reduction reactions.

It catalyzes the joining of two molecules using ATP hydrolysis.

It catalyzes the hydrolysis of peptide bonds.

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Verified step by step guidance

Step 1: Begin by understanding the role of ligase enzymes. Ligases are a class of enzymes that catalyze the joining (ligation) of two molecules, typically requiring energy input from ATP hydrolysis.

Step 2: Compare the given options to the function of ligase enzymes. The first option describes transferases, which transfer functional groups between molecules. This is not the function of ligases.

Step 3: Evaluate the second option, which describes oxidoreductases. These enzymes catalyze oxidation-reduction reactions, involving electron transfer. Again, this is not the function of ligases.

Step 4: Analyze the third option, which states that ligases catalyze the joining of two molecules using ATP hydrolysis. This matches the definition and function of ligase enzymes.

Step 5: Review the fourth option, which describes hydrolases. These enzymes catalyze the hydrolysis of peptide bonds or other bonds, which is unrelated to the function of ligases. Therefore, the correct answer is the third option.