Which of the following plays a significant role in energy exchange?

Which of the following is a fat-soluble vitamin?

$X$ - Glycosidic bond is formed by dehydration.
$Y$ - Due to hydrolases,peptide bond splits.

Which of the following pairs is $NOT$ correctly matched?

We commonly call $ATP$ as the energy currency of the cell. Can you think of some other energy carriers present in a cell? Name any two.

Match the names of items listed under column $I$ with the items given under column $II$; choose the answer which gives the correct combination of the alphabets of the two columns.

Column $-I$	Column $-II$
$(A)$ Ketone	$(p)$ Has $5$ carbon sugar,a phosphate group and a nitrogenous base
$(B)$ Fatty acid	$(q)$ Has long chain of carbon and hydrogen atoms and a carboxyl group at one end
$(C)$ Aldehyde	$(r)$ Has a carbonyl group at the end of the carbon chain
$(D)$ Nucleotide	$(s)$ Has a carbonyl group within the carbon chain