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Chemistry · 2024 · 3 marks
CBSE 2024 · Region 4 · Set 1 · Q26
Explain the following terms: (a) Essential amino acids (b) Peptide bond (c) Denaturation 1 × 3
Explain the following terms:
(a)
Essential amino acids
(b)
Peptide bond
(c)
Denaturation $\displaystyle \mathbf{1} \boldsymbol{\times} \mathbf{3}$
Marking-scheme solution
(a)
Amino acids that cannot be synthesised in the body and must be obtained through diet.
(b)
The amide linkage between - COOH group and - \(\displaystyle \mathrm{NH}_{2}\) group. / The amide linkage (-CONH-)which joins two amino acids.
(c)
When a protein in its native form, is subjected to physical change like change in pH, temperature etc it loses itsbiological activity (Or destruction of secondary and tertiary structure.)
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CBSE Class 12 Chemistry past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.