Riboflavin is

The most abundant intracellular cation is

The energy-rich component is .......

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

Match List-$I$ with List-$II$.

List-$I$	List-$II$
$(a)$ Protein	$(i)$ $C=C$ double bonds
$(b)$ Unsaturated fatty acid	$(ii)$ Phosphodiester bonds
$(c)$ Nucleic acid	$(iii)$ Glycosidic bonds
$(d)$ Polysaccharide	$(iv)$ Peptide bonds

Choose the correct answer from the options given below.

The conversion of fatty acids into $CO_2$ and $H_2O$ is called $........$ process,and the synthesis of fatty acids from acetyl $CoA$ is called $........$ process.