Question

Read the following statements:
i) Chitin, starch, glycogen and agar-agar are homopolymers ii) In a glycogen, the left end is called the non-reducing end
iii) Starch forms helical secondary structures but cellulose does not contain complex helices.
iv) Cellulose Can easily hold iodine.
v) Chitin is a storage polysaccharide How many of the above statements are correct?

• A. Two
• B. Three
• C. Four
• D. Five

Answer 1

The correct option is B Three

Starch and glycogen are homopolymers of glucose, agar- agar of galactose and chitin is a homopolymer of the monosaccharide NAG. Starch forms helical secondary structures and can hold iodine but cellulose does not contain such complex helices and therefore cannot hold iodine. Chitin is a structural polysaccharide. Glycogen has one reducing end (right-hand end of a chain) but many non-reducing ends (left-hand ends) due to the branches. So, three statements i, ii and iii are correct. So, the correct option is 'Three'.