Which of the following is not made up of cellulose?

Match the following columns:

Column-$I$	Column-$II$
$P$. Starch $+ I_2$	$I$. Blue color
$Q$. Glycogen $+ I_2$	$II$. Red color
$R$. Cellulose $+ I_2$	$III$. No color

Aqueous solution of carbohydrate with $2$ drops of alcoholic solution of $\alpha$-naphthol and $H_{2}SO_{4}$ gives a ring at the junction. The colour of the ring is:

Which reserve food does a starving person consume first?

Which of the following is the molecular formula of a triose sugar?

What is the molecular formula of the sugar present in the structure of $ATP$?