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Which one of the following statements about mycoplasma is wrong?

1. They are pleomorphic
2. They are sensitive to penicillin
3. They cause diseases in plants
4. They are also called PPLO

Correct answer: They are sensitive to penicillin

Solution

Mycoplasmas lack a cell wall, so penicillin—which inhibits cell wall synthesis—does not work against them. The other statements are true: they are pleomorphic, called PPLO, and some species cause plant diseases.

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