61. Which of the following statements is FALSE?
(A) The presence of scaffolding proteins can increase the efficiency of signal transduction.
(B) Enzyme cascades amplify the cell’s response to a signal.
(C) Inositol triphosphate and diacylglycerol are produced by phospholipase A cleavage of certain kind of phospholipid.
(D) Phosphodiesterase converting cAMP to AMP is one of the ways to terminate the signal.
(E) The activation of cell surface receptors of growth factors may regulate the activity of a specific gene.