What does it mean to say that a signal is transduced?

Question

Quizplus · Accepted Answer

Transduction refers to the conversion of a signal from one form to another. In the context of cell signaling, this usually means that an extracellular signal (such as a hormone, neurotransmitter, or growth factor) is converted into an intracellular signal that can be recognized by the cell's signaling machinery. This is often accomplished through a series of biochemical reactions that are triggered by the initial signal, ultimately leading to changes in gene expression, metabolism, or other cellular activities.

What Does It Mean to Say That a Signal Is