Biology 9700 · AS & A Level · Proteins

Proteins — practice question

The characteristics of four proteins, W, X, Y and Z, are given below. W is made up of two polypeptides joined by disulfide bonds. X is made up of three polypeptides wound tightly around each other. Y is made up of four polypeptides, and each one has a prosthetic group. Z is made up of four polypeptides joined together by disulfide bonds. Which row correctly matches the named proteins?

  • Aantibody: W, collagen: X, haemoglobin: Y
  • Bantibody: W, collagen: Y, haemoglobin: X
  • Cantibody: Z, collagen: X, haemoglobin: Y
  • Dantibody: Z, collagen: Y, haemoglobin: X

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