Which one of these is not an example of intracellular communication?

A. Heart cells contract together

B. DNA in a cell replicates

C. Water regulation by a cell's central vacuole

D. Charged ions distributed a plasma membrane?


2. Which intercellular communication type changes membrane permeability?

A. Molecular receptor

B. Enzyme-linked receptor

C. Transmembrane receptor

D. Ion channel- linked receptor
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