Refer to the given structure of adenylic acid. In this,identify $A$.

Statement $X$: Energy transformation always occurs in the metabolism of living organisms.
Reason $Y$: Living organisms continuously obtain energy from food.

Vitamin $C$ is

$A$ diet rich in butter,red meat,and eggs,when consumed regularly,will lead to:

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

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