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Which of the following is true about the structure of the gram-positive cell wall

  • A.is composed of thick peptidoglycan layer 
  • B.periplasmic space is absent
  • C.include significant amount of teichoic and lipoteichoic acids
  • D.All of the above

Answer: D

Correct answer: All of the above

All three are true of a gram-positive wall: a thick peptidoglycan layer of many sheets; no true periplasmic space, since there is no outer membrane to bound one; and substantial teichoic and lipoteichoic acids, which give the wall its negative charge.

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