Signal transduction pathways benefit cells for all of the following reasons except
A) they help cells respond to signal molecules that are too large or too polar to cross the plasma membrane.
B) they enable different cells to respond appropriately to the same signal.
C) they help cells use up phosphate generated by ATP breakdown.
D) they can amplify a signal.
E) variations in the signal transduction pathways can enhance response specificity.
Answer: C