Multiple choice

Which of the following is a pair of sulphur containing amino acids?

  1. Leucine and Valine

  2. Cysteine and Methionine

  3. Serine and Threonine

  4. Cysteine and Leucine

  5. Threonine and Methionine
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cysteine is a sulphur containing α-amino acid with the chemical formula HOOCCH(NH2)CH2SH. Methionine is sulphur containing α-amino acid with the chemical formula HOOCCH(NH2)CH2CH2SCH3.

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