Biology

The correct answer is: D.III, IV, II, I

Explanation:

In a typical signal transduction pathway, the sequence of events occurs as follows:

1.III. Reception: The signal begins when a ligand (such as a hormone or neurotransmitter) binds to a receptor on the surface of the cell. This is the first step, where the cell "receives" the signal.

2.IV. Transduction: After the receptor is activated by the ligand, the signal is converted into a form that can be understood by the cell. This often involves a series of...