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

Previous problemNext problem

Struggling with Biochemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which type of enzyme catalyzes the addition of a phosphate group to another molecule?

Kinase

Phosphatase

Protease

Ligase

Previous problemNext problem

Verified step by step guidance

Understand the role of each enzyme type listed in the options. A kinase is an enzyme that catalyzes the transfer of a phosphate group from a high-energy molecule like ATP to another molecule, typically a substrate. This process is known as phosphorylation.

Phosphatase enzymes, in contrast, catalyze the removal of phosphate groups from molecules, a process called dephosphorylation. This is the opposite of what a kinase does.

Protease enzymes are involved in breaking down proteins by cleaving peptide bonds between amino acids. This function is unrelated to phosphate group addition.

Ligase enzymes catalyze the joining of two molecules, often using energy derived from ATP. They are not involved in phosphate group addition.

Based on the definitions above, identify the enzyme type that specifically catalyzes the addition of a phosphate group to another molecule. The correct answer is 'Kinase'.