NEET · Biology · STD 11 - 9. Biomolecules

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

Verified Solution

Answer & Solution

Correct Answer

(D) It does not contain complex helices and hence cannot hold iodine molecules

Step-by-step Solution

Detailed explanation

Option \((4)\) is the correct answer because cellulose does not contain complex helices and hence cannot hold iodine molecules.
Option \((1), (2)\) and \((3)\) are not correct as cellulose is a polysaccharide.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Which of the following statements about inclusion bodies is incorrect ?

NEET 2020 Easy

Match List \(I\) with List \(II\)

List \(I\)	List \(II\)
\(A\). Robert May	\(1\). Species-Area relationship
\(B\). Alexander von Humboldt	\(II\). Long term ecosystem experiment using out door plots
\(C\). Paul Ehrlich	\(III\). Global species diversity at about \(7\) million
\(D\). David Tilman	\(IV\). Rivet popper hypothesis

Choose the correct answer from the options given below:

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