In the nervous system, a synapse is a structure that permits a neuron (or nerve cell) to pass an electrical or chemical signal to another neuron or to the target effector cell.——————Neurotransmitters are endogenous chemicals that enable neurotransmission. It is a type of chemical messenger which transmits signals across a chemical synapse, such as a neuromuscular junction, from one neuron (nerve cell) to another "target" neuron, muscle cell, or gland cell.
According to my knowledge there are many. Ribosomes, Centrioles, ER. <span>cellular structure is NOT surrounded by at least one membrane.</span>
A. Metabolic
Hopes it help
Prokaryotes don't have a nucleus so it's bacteria :)
<span>Factors that affect 'neurotransmission' are plentiful, but the most common include genetics, eating habits, exposure to chemicals, and in the case of humans, stress.</span><span>
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