Answer is B.
Antagonist is a drug that blocks the action of the neurotransmitter.
Hope it helped you.
-Charlie
Answer: no
Explanation: The solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. This process is called passive transport or facilitated diffusion, and does not require energy.
M+90=150
minus 90 in both sides
m=60
The mantle is the largest portion of the earth.