Which of the following best describes cell communication processes that occur when a cell detects a signaling molecule?

A. The cell produces hormones that convert the molecule to an electric signal that is detected by relay molecules
B. The cell releases an enzyme that binds the molcule to receptors, allowing the molcule to enter the cell
C. The molecule binds to a receptor protein, which changes the protein and triggers signal transduction
D. The molecule enters the cell through an ion channel and activates a cellular response by inhibiting tranduction