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Which among the following statements concerning platelets is INCORRECT. Platelets:

  • A.contain DNA
  • B.are roughly disk-shaped
  • C.have little ability to synthesize proteins
  • D.are between 1/2 and 1/3 the diameter of the red cell

Answer: A

The incorrect statement is that platelets contain DNA.

They have no nucleus, being fragments budded off from megakaryocytes in the marrow. The rest is true: they are roughly disc-shaped, about 2 to 3 micrometres across against the red cell's 7, and synthesise very little protein.

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