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###### The hormone epinephrine brings aboutdifferent responses in different tissues. In some tissues, itcauses an increase in inositol trisphosphate (IP3); in othertissues, it causes an increase in cyclic AMP (cAMP); yet in othertissues, it causes a decrease in cAMP. Explain how a singlechemical signal can bring about such different effects in differenttissues. A complete answer includes (a) the type of receptorinvolved, (b) the type of G-alpha subunit involved, (c) the enzymeproducing the given second

The hormone epinephrine brings about different responses in different tissues. In some tissues, it causes an increase in inositol trisphosphate (IP3); in other tissues, it causes an increase in cyclic AMP (cAMP); yet in other tissues, it causes a decrease in cAMP. Explain how a single chemical signal can bring about such different effects in different tissues. A complete answer includes (a) the type of receptor involved, (b) the type of G-alpha subunit involved, (c) the enzyme producing the given second messenger, and (d) whether that enzyme is activated or inhibited in each case.

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