✓ Board-verified
Chemistry · 2025 · 3 marks
CBSE 2025 · Region 7 · Set 2 · Q22
Differentiate between: (a) Essential amino acids and Non-essential amino acids (b) Peptide linkage and Glycosidic linkage (c) Fibrous protein and…
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
More from Biomolecules
- Assertion: Vitamin C cannot be stored in our body. Reason (R): Vitamin C is water soluble and readily excreted in urine.2024 · asked 2×
- Write two differences between DNA and RNA. 1 × 22023 · asked 2×
- Differentiate between the following: 2 × 1 (i) Acidic amino acids and basic amino acids (ii) Nucleotide and Nucleoside2026
- Assertion: Glucose gets oxidized to six carbon gluconic acid on reaction with bromine water. Reason (R): The carbonyl group is absent in the open…2026
- Living systems are made up of various complex biomolecules like carbohydrates, proteins, nucleic acids, lipids, etc. Carbohydrates are optically…2023
- Helical structure of proteins is stabilized by:2023
- Assertion: The pentaacetate of glucose does not react with H_2 N-OH. Reason (R): It indicates the presence of free - CHO group in glucose.2026
- Write the reactions of glucose with: H_2 N-OH Br_2 water2024
CBSE Class 12 Chemistry past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.