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Which of the given statements is not true for viruses?
(a)They are nucleoproteins where protein is infectious in nature
(b)They can be crystallised and crystals consist largely of proteins
(c)Virus means venom or poisonous fluid
(d)A virus may use either DNA or RNA as its genetic material

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Important Questions on Biological Classification
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A. Infect the bacteria.
B. Usually have double-stranded DNA.
C. Are also called bacteriophages.
D. Lack of protein coat.

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(a) Lack cell wall
(b) Can survive without oxygen
(c) Are primitive organisms responsible for production of biogas
(d) Are smallest living organisms

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