You Have Recently Identified a Molecule You Believe to Be

Multiple Choice

You have recently identified a molecule you believe to be a signaling molecule associated with signal transduction. All you know about this molecule is that it is hydrophilic; therefore, you expect it to interact with a receptor ____.

A) on the cell surface
B) within the cytoplasm of the cell
C) in the nucleus of the cell
D) on the cytoplasmic surface of the plasma membrane
E) associated with the endoplasmic reticulum