NEET Sample Paper NEET Sample Test Paper-17

  • question_answer Tobacco Mosaic Virus (TMV) genes are

    A)  Double-stranded RNA

    B)  Single-stranded RNA

    C)  Polyribonucleotides

    D)  Proteinaceous

    Correct Answer: B

    Solution :

    All viruses are nucleoprotein (Nucleic acid + Protein) in the structure. The nucleic acid (DNA and RNA) is genetic material. In a particular virus, either DNA or RNA is the genetic material and both are never present in a virus. Viruses are known as the bases of genetic material as DNA viruses or RNA viruses. Hence, the type of viruses are: (i) Double stranded DNA or dsDNA - Hepatitis B (ii) Single stranded DNA or ssDNA - coliphage (iii) Double stranded RNA or dsRNA Reo virus, wound tumour virus (iv) Single stranded RNA or ssRNA - Tobacco mosaic virus (TMV) Hence, the correct option is (b).

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