Signal transduction occurs when a chemical message at the cell surface elicits a response inside the cell. Which one of the following events is not associated with signal transduction?

Question

Quizplus · Accepted Answer

Internal receptor binding is not associated with signal transduction because signal transduction depends on the binding of a chemical message to a cell-surface receptor. Internal receptors, such as nuclear receptors, are activated by molecules that can pass through the plasma membrane and directly bind to the receptor inside the cell. However, this process does not involve a chemical message at the cell surface that elicits a response inside the cell, which is the defining characteristic of signal transduction.

Signal Transduction Occurs When a Chemical Message at the Cell