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Biochemistry · Hormonal signaling
Sample itemWhat receptor class does insulin use?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. Receptor tyrosine kinase
The defining Hormonal signaling relationship supports Receptor tyrosine kinase; it is the option that most directly explains the biochemical pathway or pathological process in the stem.
Option by option
A. G-protein receptor only
G-protein receptor only does not account for the central finding in this item.
B. Nuclear steroid receptor
Nuclear steroid receptor is relevant in a different context but is not supported here.
C. Receptor tyrosine kinase (correct)
Correct. Receptor tyrosine kinase is the appropriate conclusion from the key feature.
D. Ligand-gated ion channel
Ligand-gated ion channel does not match the stated hormonal signaling mechanism.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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