It prevents harmful substances from entering a cell. I uses carrier proteins to do so.
When an action potential does arrive at the terminal, the neurotransmitter must be quickly and efficiently released from the terminal<span> and into the synaptic cleft. The neurotransmitter must then be recognized by </span>selective receptors on the postsynaptic cell<span> so that it can pass along the signal and initiate another action potential.</span>
I think the answer is conduction
i hope this helps
Answer:
A
Explanation:
A tundra is a cold biome. It contains frost, extremely low temperatures, little precipitation, and few plants and vegetation.
<span>A person's oxygen dispersal into the bloodstream from the lungs drops about 4 percent every decade. This happens because of decrease in organ reserve due to aging.</span>
