Multiple choice

Which amino acid is used to synthesise porphyrins used in red blood cells?

  1. Alanine

  2. Proline

  3. Glycine

  4. Valine

  5. Serine
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Porphyrins are a group of chemicals that help to form many important substances in the body including haemoglobin, which is the protein in red blood cells that carries oxygen in the blood. The standard amino acid glycine is used to synthesise porphyrins used in red blood cells.

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