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Model Paper 6 — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETModel Paper 64 Marks
MCQ
Choose the most appropriate option with respect to starch and cellulose-
  • A
    Both starch and cellulose are branched polymer.
  • B
    Both Starch and Cellulose are linear polymer.
  • C
    Cellulose is branched polymer but starch is linear polymer.
  • ✓
    Starch is branched polymer but cellulose is linear polymer.
✓

Answer

Correct option: D.
Starch is branched polymer but cellulose is linear polymer.
(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 $I _2$ molecules in the helical portion. The Starch$I _2$ is blue colour. Cellulose does not contain complex helices and hence cannot hold $I _2$.

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