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You may choose more than one answer. Which of the following is a mechanism of signal...

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Biology

You may choose more than one answer. Which of the following is amechanism of signal amplification in the cAMP-PKA pathway?

One signal molecule, epinephrine, activates lots ofG-proteins.

When activated, adenylyl cyclase synthesizes many cAMPmolecules.

cAMP-activated protein kinase A (PKA) can activate a number oftarget proteins by phosphorylation.

Proteins phosphorylated by PKA can further activate otherproteins that make other products

Answer & Explanation Solved by verified expert
3.7 Ratings (605 Votes)
Your answers are 1When activated adenylyl cyclase synthesizes many cAMP molecules 2 cAMPactivated protein kinase A PKA can activate a number of target proteins by phosphorylation EXPLANATION As long as epinephrine remains bound to a receptor the receptor can activate a succession of G proteins In addition each adenylyl cyclase enzyme can convert numerous ATPs into cyclic AMP molecules Other activated enzymes in the pathway can also continually catalyze reactions The G protein    See Answer
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