Biology

The correct answer is: C.Increases the cell response to a signal.

Explanation:

Signal amplification in cellular signaling pathways refers to the process where a small initial signal (like the binding of a ligand to a receptor) is amplified to produce a larger response inside the cell. This is achieved through a cascade of biochemical reactions that involve secondary messengers and enzymes, allowing a small number of signaling molecules to trigger a large-scale cellular response. This amplification is crucial for cells to respond effectively to signals, even when the initial signal is weak.

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