Messages,in the Form of Chemical Signals,are Sent from One Cell

Multiple Choice

Messages,in the form of chemical signals,are sent from one cell to another with only those capable of receiving the specific chemical able to respond to them.Water soluble signals have receptors

A) On the outside of the cell, constituting a component of the plasma membrane
B) On the inside of the cell, beyond the boundary of the plasma membrane
C) Which have a specific structure complementary to the molecular chemical message being sent
D) Both on the outside of the cell, constituting a component of the plasma membrane and which have a specific structure complementary to the molecular chemical message being sent
E) Both on the inside of the cell, beyond the boundary of the plasma membrane and which have a specific structure complementary to the molecular chemical message being sent are correct