NEET Previous Year Question
Cellulose does not form blue colour with lodine because.
Topic: NEET PYQ
Answer: D. Full step-by-step solution below.
- AIt breaks down when iodine reacts with it.
- BIt is a disaccharide.
- CIt is a helical molecule.
- DIt does not contain complex helices and hence cannot hold iodine molecules.
Correct answer: D
Solution
(d) 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 .More Biomolecules PYQs
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