The given figure is useful in the structure of which molecule?

Enzymes,vitamins,and hormones can be classified into a single category of biological chemicals because all of them:

$A$: Variations exist among different species of living organisms.
$R$: The sequence,type,and number of amino acids in the structure of a protein are fixed.

To a living organism,which of the following has the greater amount of available energy per molecule?

Match the following columns:

Column $I$	Column $II$
$(A)$ Chlorine	$(i)$ Outer surface of aerial parts of plants
$(B)$ $DHAP$	$(ii)$ Structural component of plant cell wall
$(C)$ Cellulose	$(iii)$ Osmoregulation in blood
$(D)$ Crotonic acid	$(iv)$ Phosphorylated ketotriose
$(E)$ Wax	$(v)$ Unsaturated fatty acid

Column-$I$ contains some terms and Column-$II$ contains their meanings. Match them properly and choose the right answer.

Column-$I$	Column-$II$
$A$. Glycogenesis	$1$. Conversion of glycogen to glucose
$B$. Glycosuria	$2$. Conversion of glucose to glycogen
$C$. Gluconeogenesis	$3$. Excretion of glucose in urine
$D$. Glycogenolysis	$4$. Conversion of non-carbohydrate sources to glucose
	$5$. Conversion of glucose to starch