Monday, November 16, 2009

Bacteria defend against viral infection through the action of:?

A. antibiotics that they produce


B. restriction nucleases that chop up foreign DNA


C. their R plasmids


D. reverse trnscriptase


E. episomes that incorporate viral DNA into the bacterial chromosome

Bacteria defend against viral infection through the action of:?
B.
Reply:B is the only correct answer.


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