Vitamins are:

Molecules are always moving. Some molecules move faster than others; . . . . . . is a measure of their average velocity of movement.

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

Which of the following statements are correct?
$(a)$ Proteins are heteropolymers of amino acids.
$(b)$ The sugar found in nucleic acids is of the $\beta$-type.
$(c)$ Nucleic acids exhibit acidic properties.
$(d)$ $5$-methyl uracil is attached to the first carbon atom of the ribose sugar.
$(e)$ Collagen is the most abundant protein found in the plant kingdom.

Cow's milk is slightly yellowish in colour due to the presence of

How many of the following biological molecules possess the ability to undergo duplication?
$RNA, DNA,$ Protein,Enzyme,Lipid,Carbohydrate