🛠️ JEE🧪 Chemistry

Given below are two statements : Statement (I): On hydrolysis, oligopeptides give rise to fewer number of \(\alpha\)-ami…

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Given below are two statements :
Statement (I): On hydrolysis, oligopeptides give rise to fewer number of \(\alpha\)-amino acids while proteins give rise to a large number of \(\beta\)-amino acids.
Statement (II) : Natural proteins are denatured by acids which convert the water soluble form of fibrous proteins to their water insoluble form.
In the light of the above statements, choose the most appropriate answer from the options given below

[JEE Main 2025, 7 Apr (Shift 2)]

a

Both statement I and statement II are correct

b

Statement I is incorrect but Statement II is correct

c

Both statement I and statement II are incorrect

d

Statement I is correct but Statement II is incorrect

✓ Correct answer: c)

Both statement I and statement II are incorrect

ExplanationStatement (I): False
  • On hydrolysis, both oligopeptides and proteins yield α-amino acids, not β-amino acids.

  • Oligopeptides give fewer α-amino acids, while proteins give a large number of α-amino acids.

  • Hence, the mention of β-amino acids makes the statement incorrect.

Statement (II): False
  • Denaturation of proteins by acids generally converts water-soluble globular proteins into insoluble coagulated forms.

  • Fibrous proteins are already water-insoluble, so they are not converted from soluble to insoluble forms.

  • Therefore, the statement is conceptually incorrect.

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