What is used in facilitated diffusion to assist the transport of sugar and sodium molecules?

1 Answer
Al E.
Dec 6, 2017

Proteins embedded in the cell membrane called channels.

Generally, these are gated by some mechanism. For instance, sodium channels are generally closed in neurons, lest a certain voltage gradient is present.

Or, NMDAR need a certain voltage present in addition to a ligand binding to its receptor (e.g. glutamate, D-serine, et cetera).

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