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10. Biomolecules — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry10. Biomolecules1 Mark
MCQ
Proteins are composed of
  • ✓
    $\alpha - $amino acids
  • B
    Carbohydrates
  • C
    Vitamins
  • D
    Mineral salts
✓

Answer

Correct option: A.
$\alpha - $amino acids
a
(a) Peptides are formed by condensation of $\alpha $-amino acids.

${H_2}N - C{H_2}COOH + {H_2}N - C{H_2} - COOH$   $\xrightarrow{{ - {H_2}O}}\,{H_2}N - C{H_2}\mathop { - CONH - }\limits_{{\text{peptide bond}}} C{H_2}COOH$   $\xrightarrow{{{H_2}N - C{H_2}COOH}}$   Even further

 

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