Biology 9700 · AS & A Level · Proteins

Proteins — practice question

An amino acid may be shown as below, in which $R$ stands for a variable side chain. Which of the following is not a possible side chain?

  • A$\mathrm{CH_3}$
  • B$\mathrm{CH_2CH_2SCH_3}$
  • C$\mathrm{CH_2CONH_2}$
  • D$\mathrm{HOCH_2CH(OH)CH_2OH}$

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