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special chemical molecules that transmit nerve impulses across a synapse.
(also called homeostatic control) the self-regulation and maintenance of a constant stable...
the formation of a relatively complex chemical compound from simpler substances.
the outermost layer of the stele or vascular cylinder in a dicotyledonous plant root. Lateral...
the part of the cell that controls all the activities of the cell and plays an important role in...
a relatively small, similar building block of larger molecules (polymers).