$I.$ Somatostatin inhibits intestinal absorption of glucose.
$II.$ Leydig cells secrete progesterone.
$III.$ Melatonin is secreted by the pineal gland.
$IV.$ Myxoedema is a thyroid disorder.
$V.$ Neurohypophysis secretes $ACTH$.
Select the correct statements and choose the option.

Consider the following statements about insulin:
$I$. Human insulin is made up of $51$ amino acids arranged in two polypeptide chains.
$II$. The two polypeptide chains are interconnected by two disulphide bridges.
$III$. In mammals,including humans,insulin is synthesized as a pro-hormone,which contains an extra stretch called the $C$-peptide.
$IV$. $C$-peptide is not present in the mature insulin.
Which of the statements given above are correct?

Match the following columns:

Column-$I$ (Gland)	Column-$II$ (Hormone)
$P$. Thyroid gland	$I$. $PTH$
$Q$. Parathyroid gland	$II$. Melatonin
$R$. Thymus	$III$. Thymosin
$S$. Pineal gland	$IV$. $T_3$

Identify the odd one out.

Which of the following statements is false?

Insulin differs from growth hormone in the context of: