Answer:
Epinephrine binds to receptors on some smooth muscles (ex: around arterioles) → Ca++ released from ER → intracellular Ca++ up → stimulates contraction. c. Epinephrine binds to receptors on some smooth muscles (ex: around bronchioles) → phosphorylates protein needed for response to Ca++, preventing response.
The answer is definitely not D. why would the cell dicard DNA? Everything is used and reused in a cell. The correct answer is A, after the helicase comes in and splits the DNA into two it just has to add the corresponding nucleotides and there you have it: two stands of DNA both containing a old stand and a new one
Answer: Song,Tune
Explanation: Music is a melody
I’m pretty sure this is right, good luck
