Which of these statements does NOT apply to peptide hormones
A)They are synthesized by the endoplasmic reticulum-Golgi complex system.
B)They bind to surface receptors of their target cells.
C)They circulate bound largely to plasma proteins.
D)They exert their effect largely by means of second-messenger systems.

Question

Quizplus · Accepted Answer

Peptide hormones are generally water-soluble and circulate freely in the plasma, not bound largely to plasma proteins. This characteristic contrasts with steroid hormones, which are lipid-soluble and do circulate bound to plasma proteins.

Which of These Statements Does NOT Apply to Peptide Hormones