Biology 9700 · AS & A Level · Proteins

Proteins — practice question

Which of these molecules contains a carboxyl group?

  • A1 and 2 only
  • B3 and 4 only
  • C1, 3 and 4 only
  • D2, 3 and 4 only

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI