NEET · Biology · STD 11 - 9. Biomolecules

Which one of the following statements is wrong?

A Uracil is a pyrimidine.
B Glycine is a sulphur containing amino acid.
C Sucrose is a disaccharide.
D Cellulose is a polysaccharide.

Verified Solution

Answer & Solution

Correct Answer

(B) Glycine is a sulphur containing amino acid.

Step-by-step Solution

Detailed explanation

(b) : Glycine is a neutral amino acid. Cysteine and methionine are sulphur containing amino acid.

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.

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Match the hominids with their correct brain size

\((a)\) Homo habilis	\((i)\) \(900\; \mathrm{cc}\)
\((b)\) Homo neanderthalensis	\((ii)\) \(1350\; \mathrm{cc}\)
\((c)\) Homo erectus	\((iii)\) \(650-800\; \mathrm{cc}\)
\((d)\) Homo sapiens	\((iv)\) \(1400\; \mathrm{cc}\)

Select the correct option. \((a)\quad (b)\quad (c)\quad (d)\)

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