The primary structure of a protein is

  1. the number of polypeptides
  2. the folding into α-helices
  3. the sequence of amino acids
  4. the 3D shape
Answer

C) the sequence of amino acids

Primary = sequence. AS & A Level Biology · Topic 2 Biological Molecules · 2.3 Proteins

Biology MCQ · More A Level Biology: Biological molecules MCQs · Practise