NEET Biology NEET PYQ-Viruses Viroids and Lichens

  • question_answer
    Viruses are no more “alive” than isolated chromosomes because:                 [AIPMT 2003]

    A) they both require oxygen for respiration

    B) both require the environment of a cell to replicate

    C) they require both RNA and DNA  

    D) they both need food molecules

    Correct Answer: B

    Solution :

    [b] Viruses are noncellular obligate parasite. In the free state they are just like the particles. They do not have their own metabolic machinery. They use host's machinery for multiplication.


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