Apentix/AP Biology/Unit 4: Cell Communication and Cell Cycle/Question

AP Biologyeasymcq1 pt

What is the role of a receptor in signal transduction?

A.It binds the ligand and changes shape to initiate the cascade

B.It destroys the ligand on contact

C.It carries the ligand into the nucleus

D.It synthesizes second messengers from glucose

Explanation

Core Concept

Ligand binding triggers a conformational change that activates the receptor's intracellular region, launching the transduction pathway.

Correct Answer

AIt binds the ligand and changes shape to initiate the cascade

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