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.
84.798 is the mass number
A. the runner's muscles have accumulated lactic acid.. I think. 99% sure
Answer:
microfilaments
Explanation:
Cytoskeleton are made of three main filaments including actin filaments, microtubules and microfilaments. Microfilaments are flexible double strands of the protein actin that are of different proteins which give mechanical support. Important functions include:They lead the intracellular movement of organelles and molecules
.They stabilize mechanically the plasma membrane.
