NEET 2014 Biology question

Viruses have

(1)DNA enclosed in a protein coatCorrect
(2)Prokaryotic nucleus
(3)Single chromosome
(4)Both DNA and RNA

Answer: (1)

Solution

Viruses are nucleoprotein particles: the genetic material (either DNA or RNA, never both in the same virus) is enclosed in a protein coat (capsid). They have no cellular organisation, so they have no prokaryotic nucleus (2) and no true chromosome (3), and

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Question ID VK-091598