Question

(i) Which one of the following is a polysaccharide: Starch, maltose, fructose, glucose,
(ii) Write one difference between $\alpha -$ helix and $\beta -$ pleated sheet structures of protein.
(iii) Write the name of the disease caused by the deficiency of vitamin $B_{12}$.

Answer 1

(i) Among above four starch is a polysaccharide which contain more than one sugar units.
(ii) $\alpha -$helix is a rod type structure of protein whereas $\beta -$helix is a sheet like structure.
(iii) Pernicious Anaemia caused by the deficiency of vitamin B${}_{12}$.