Steroid hormones are derived from

Hormones are .....

Which of the following glands secrete peptide hormones?

Which of the following statements is correct regarding the endocrine system?

Match the following columns:

Column-$I$	Column-$II$
$P$. Peptide, polypeptide, protein hormones	$I$. Epinephrine
$Q$. Steroids	$II$. Thyroid hormones
$R$. Iodothyronines	$III$. Cortisol, testosterone, estradiol, progesterone
$S$. Amino acid derivatives	$IV$. Hormones of pancreas, pituitary, and hypothalamus

$A$ 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 ...$B$....