Multiple Choice
In liver cells, epinephrine stimulates the breakdown of glycogen. As the signal-transduction pathway progresses, __________.
10. Cell Signaling
Signal Amplification
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The general name for an enzyme that transfers phosphate groups from ATP to a protein is __________.
A
protein dehydrogenase
B
protein phosphatase
C
peptidase
D
protein cyclase
E
protein kinase
Verified step by step guidance1
Understand the role of enzymes in biological reactions: Enzymes are proteins that act as catalysts to speed up chemical reactions without being consumed in the process.
Identify the specific function described in the problem: The enzyme in question transfers phosphate groups from ATP to a protein.
Recall the process of phosphorylation: Phosphorylation is the addition of a phosphate group to a molecule, often mediated by enzymes.
Differentiate between enzyme types: A protein kinase is an enzyme that catalyzes the transfer of phosphate groups from ATP to a protein, a process known as phosphorylation.
Recognize the correct enzyme type: Based on the function of transferring phosphate groups, the enzyme is a protein kinase.
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