Insulin:
A) stimulates the breakdown of glycogen
B) is a steroid hormone
C) stimulates glucose uptake in muscle
D) inhibits fatty acid synthesis
E) is secreted by the adrenal gland
IMAT 2025 · Question 32
Q32 - Blood glucose regulation: insulin and glucagon
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The correct answer is C) stimulates glucose uptake in muscle.
Insulin lowers blood sugar, mainly by getting muscle and fat cells to take up glucose (it moves GLUT4 transporters to their membranes).
Breaking down glycogen (A) is what glucagon does, the opposite. Insulin is a peptide hormone made by the pancreas, not a steroid or an adrenal hormone, and it promotes fat synthesis rather than blocking it.
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