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CAIE A-Level Biology 2.3.1 Amino Acids and Peptide Bonds

Practise drawing the general amino-acid structure and showing peptide-bond condensation or hydrolysis between amino and carboxyl groups with water balanced.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • draw the central carbon bonded to amino, carboxyl, hydrogen and variable R groups
  • form a peptide bond between carboxyl and amino groups with water released
  • reverse peptide formation by adding water during hydrolysis of the C–N linkage

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