Question

Which of the following statements regarding viruses are correct?
(i) These are cellular, infectious, nucleoprotein particles
(ii) Genetic material is either DNA or RNA, but never both
(iii) Virus are obligate intracellular parasite

• A. (i), (ii) and (iii)
• B. (i) and (iii)
• C. (ii) and (iii)
• D. only (ii)

Answer 1

The correct option is C (ii) and (iii)

Viruses are non-cellular, infectious, nucleoprotein entity enclosed within a protein covering or coat. They are obligate intracellular parasites and are inert outside the host cell. Inside the host cell, they utilise the synthetic machinery of the host cell for its own multiplication. They have either DNA or RNA as their genetic material, but can never have both.