Which of the following is not true in ligand-gated ion channels? a. S4 segment moves in response to changes in membrane potential b. ligand binds to an agonist binding site c. conformational change occurs in subunits d. all of the above are true

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Cell Signaling

It allows cells to perform various cellular activities, coordinate, and interact with other cells. All cells of an organism receive signals from their environments and respond accordingly. Even the unicellular eukaryotes receive signals secreted by other cells and respond. In the case of yeast, mating takes place by signaling between the yeast cells. Communication by cell signaling in a multicellular organism has become a vast and important part of various fields of biology.