Signal transduction is mediated by _____ interaction.
A)enzyme-substrate
B)operator-repressor
C)receptor-ligand
D)inducer-repressor

Question

Quizplus · Accepted Answer

Signal transduction involves the transmission of signals from outside the cell to the inside, and this is typically mediated by receptor-ligand interactions. The ligand binds to the receptor, which initiates a series of intracellular signaling events that ultimately lead to a cellular response. Enzyme-substrate interactions involve the binding of a substrate molecule to an enzyme, leading to a chemical reaction. Operator-repressor interactions involve the binding of a repressor protein to an operator site on DNA, inhibiting transcription of a gene. Inducer-repressor interactions involve the binding of an inducer molecule to a repressor protein, releasing it from an operator site on DNA and allowing transcription of a gene. While these other interactions may be involved in gene regulation or biochemical pathways, they are not the primary mediators of signal transduction.

Signal Transduction Is Mediated by _____ Interaction