Hormones Often Cause a Cell to Elicit Multiple Responses; This

Multiple Choice

Hormones often cause a cell to elicit multiple responses; this is because ________.

A) there are thousands of receptors on the cell membrane
B) the receptors bind to several hormones at the same time
C) the protein kinases are rapidly metabolized into functional amino acids
D) during protein kinase activation, enzymes phosphorylate many other enzymes