Which of the following statements is true? a. Extracellular signal molecules tha

Question

Which of the following statements is true?
a. Extracellular signal molecules that are hydrophilic must bind to a cell surface receptor so as to signal a target cell to change its behavior.
b. to function, a;; extracellular signal molecules must be transported by their receptor across the plasma membrane into the cytosol.
c. a cell-surface receptor capable of binding only one type of signal molecule can mediate only one kind of cell response.
d. any foreign substance that binds to a receptor for a normal signal molecule will always induce the same response that is produced by that signal molecule on the same cell type

Explanation / Answer

c

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