Question

question 20
through which process are neurotransmitter molecules released from the presynaptic neuron?
a endocytosis
b exocytosis
c pinocytosis
d osmosis

Explanation:

Neurotransmitter molecules are stored in vesicles in the presynaptic neuron. When an action potential reaches the axon - terminal, these vesicles fuse with the presynaptic membrane and release the neurotransmitters into the synaptic cleft. This process is called exocytosis. Endocytosis is the process of taking substances into the cell. Pinocytosis is a form of endocytosis related to the uptake of fluids. Osmosis is the movement of water across a semi - permeable membrane.

Answer:

B. Exocytosis