Introduction to Signal Transduction

AP Biology· difficulty 2/5

The diagram outlines the three classic stages of cell signaling proposed by Earl Sutherland.

Ligand Receptor Reception Transduction Response Cellular response

Which stage involves the conversion of an extracellular signal into intracellular molecular events?

  • A

    Secretion

  • B

    Transduction

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  • C

    Reception

  • D

    Response

Explanation

Transduction converts the bound ligand signal into a series of intracellular changes (often a phosphorylation cascade) that ultimately lead to the cellular response.

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