Which of the following minerals is present in Vitamin $B_{12}$?

Which one of the following is an antioxidant vitamin?

How does an $ADP$ molecule differ from an $ATP$ molecule?

Identify the correct statements about biomolecules.

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

Column-$I$ (Biomolecule)	Column-$II$ (Characteristics)
$(A)$ $ATP$	$(p)$ One or more sugar monomers
$(B)$ $DNA$	$(q)$ The main source of energy
$(C)$ Protein	$(r)$ Two strands of nucleotides
$(D)$ Carbohydrate	$(s)$ Long sequence of amino acids

Select the correct match for $X$ and $Y$.

Column $X$	Column $Y$
$(1)$ Starch	$(P)$ Found in animal skeletal tissues
$(2)$ Glycogen	$(Q)$ Stored food form in plants
$(3)$ Chitin	$(R)$ Provides strength in sclerenchyma
$(4)$ Lignin	$(S)$ Stored food form in animals