Explanation:
cAMP binds to protein kinase A and activates it, allowing PKA to phosphorylate downstream factors to produce a cellular response. cAMP signaling is turned off by enzymes called phosphodiesterases, which break the ring of cAMP and turn it into adenosine monophosphate (AMP).
Answer:
A. Tissue
Explanation:
The cells join together to form tissues. So, option (A) is the correct answer.
A hazard is a danger or risk.
Answer:
Bend and curve around the planet
Explanation:
