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Which of the following are present in teichoic acids?

  • A.ribitol residues
  • B.glycerol residues
  • C.glucose residues
  • D.ribitol or glycerol residues

Answer: D

Correct answer: ribitol or glycerol residues

Teichoic acids come in two kinds, built either on ribitol phosphate or on glycerol phosphate, with the units joined by phosphodiester bonds and often carrying sugars or D-alanine. Both give the wall its negative charge.

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