Steroid hormones are derived from . . . . . . .

The group of locally acting hormones currently identified is known as.......

What is the role of a second messenger in the mechanism of protein hormone action?

Match the following columns and select the correct option.

Column $I$	Column $II$
$(a)$ Pituitary hormone	$(i)$ Steroid
$(b)$ Epinephrine	$(ii)$ Neuropeptides
$(c)$ Endorphins	$(iii)$ Peptides,proteins
$(d)$ Cortisol	$(iv)$ Biogenic amines

What are intracellular receptors?

$A$ molecule that binds to a receptor and induces post-receptor events in a cell is called ...$A$... and a molecule that binds to the receptor and inhibits all post-receptor events is called ...$B$....