When a __________ reaches its __________ , there is a specific means of receiving it and acting on the message. This task is the responsibility of specialized proteins called __________ .

a. signaling molecule; target cell; G proteins
b. signaling molecule; target cell; receptors
c. signaling molecule; receptor; G proteins
d. kinase; receptor; proteases


Ans: b. signaling molecule; target cell; receptors

Biology & Microbiology

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Biology & Microbiology