CBSE 2025 · Region 7 · Set 2 · Q22 · 3 marks
Differentiate between :(a)Essential amino acids and Non-essential amino acids(b)Peptide linkage and Glycosidic linkage(c)Fibrous protein and Globular protein
Differentiate between :
(a)
Essential amino acids and Non-essential amino acids
(b)
Peptide linkage and Glycosidic linkage
(c)
Fibrous protein and Globular protein
Marking-scheme solution
(a)
The amino acids, which can be synthesised in the body, are known as non- essential amino
acids whereas those which cannot be synthesised in the body and must be obtained through
diet, are known as essential amino acids.
(b)
A linkage which joins two amino acids through -CO-NH- bond is peptide linkage whereas a
linkage which joins two monosaccharides through oxygen atom is known as glycosidic linkage.
(c)
Fibrous protein: parallel polypeptide chain structure / insoluble in water
Globular protein: spherical polypeptide chain structure/ soluble in water
BiomoleculesProteinsAnalyseshort_answereasy
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CBSE Class 12 Chemistry past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.