Which among the following is a second messenger generated when hormone interacts with membrane-bound receptors?
A
Cyclic AMP
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B
Insulin
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C
T3
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D
Gastrin
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Solution
The correct option is A Cyclic AMP Cyclic AMP is the second messenger generated when hormone interacts with membrane-bound receptors and this in turn regulates cellular metabolism.
The other three options are incorrect as insulin regulates glucose metabolism. T3 regulates the metabolic rate of the body and thus, helps in maintaining basal metabolic rate (BMR). Gastrin is a peptide hormone that stimulates the secretion of hydrochloric acid and pepsinogen.