Answer:
a) Acetylcholine is degraded by acetylcholinesterase.
Explanation:
After it binds for its receptor on the plasma membrane of the postsynaptic cell, acetylcholine must be removed in order to prevent repeated stimulation. Acetylcholinesterase is enzyme for the inactivation of acetylcholine, present at all cholinergic synapses. This enzyme hydrolyses acetylcholine and breaks it to the acetate and choline. Choline can be reused for the synthesis of the new acetylcholine molecule so it is taken back into the presynaptic cell.
True
because you could hurt them
make sure the scene is safe
call 911
access the victim
start CPR or rescue breathing as instructed
...its area
unit. Area. Volume. a:v
1. 1. 1. 1:1
2. 4. 8. 1:2
3. 9. 27. 1:3
4. 16. 64. 1:4
5. 25 125. 1:5
volume(l³) increases more rapidly than area(l²)