Which of the following processes represents a negative feedback mechanism in a cellular signal transduction pathway?

A) An activated intracellular messenger stimulating the release of additional extracellular ligands to amplify the signal

B) A sudden influx of cytosolic calcium ions opening neighboring calcium channels to cause a rapid surge in ion concentration

C) An activated downstream kinase phosphorylating and inactivating an upstream receptor kinase to attenuate signaling

D) A hormone-receptor complex permanently degrading repressor proteins to ensure continuous transcription of target genes

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Biology · Cell Communication & the Cell Cycle · Biology · Cell Communication

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Cell Communication & the Cell Cycle · Biology

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