Receptors for _____ Hormones Are Located on the Plasma Membrane

Receptors for _____ hormones are located on the plasma membrane and affect target cells by _____.

A) amine; activating protein kinase enzymes
B) steroid; activating protein kinase enzymes
C) peptide; forming hormone-receptor complexes that activate or inhibit gene expression
D) steroid; forming hormone-receptor complexes that activate or inhibit gene expression
E) amine; forming hormone-receptor complexes that activate or inhibit gene expression