Home Biology Biomolecules Previous Year Questions Cellulose does not form blue colour with lod…
Biology Biomolecules Previous Year Questions Single Correct MCQ
Published on: August 11, 2026

Cellulose does not form blue colour with lodine because.

A
It breaks down when iodine reacts with it.
B
It is a disaccharide.
C
It is a helical molecule.
D
It does not contain complex helices and hence cannot hold iodine molecules.

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Both starch and cellulose are made of glucose molecules, but the difference between them is that starch is branched polymer while cellulose is a linear polymer. Starch also forms helical secondary structures, so it can hold molecules in the helical portion. The Starch- is blue colour. Cellulose does not contain complex helices and hence cannot hold .

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