External stimuli would be received most quickly by a plant cell if the receptors for signal transduction were located in the
A)cell membrane.
B)cytoplasmic matrix.
C)endoplasmic reticulum.
D)nuclear membrane.
E)nucleoplasm.

Question

Quizplus · Accepted Answer

External stimuli are received by receptor proteins embedded in the cell membrane. This is because the cell membrane is directly in contact with the external environment, making it the most efficient location for reception of external signals. Once a signal is received, it can be transduced across the membrane and into the cell's cytoplasm for further processing. Therefore, the receptor proteins located in the cell membrane would be the best choice for receiving external stimuli in a plant cell.

External Stimuli Would Be Received Most Quickly by a Plant