Which of the following are the characteristics of a virus?

Parasitic

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Has a defined nucleus.

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DNA or RNA could be the genetic material.

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Infects human beings, plants, animals and bacteria.

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Solution

The correct options are
A Parasitic
C DNA or RNA could be the genetic material.
D Infects human beings, plants, animals and bacteria.
Viruses are acellular biological agents. They do not have cellular structure or organelles. So, they are parasitic in nature and require the cellular machinery of the host cell to replicate. Viruses can have either RNA or DNA as their genetic material. Viruses can infect a wide variety of organisms plants, animals, bacteria etc.

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Similar questions

Which of the following statements are incorrect?

1) RNA acts as a genetic material as well as a catalyst.

2) RNA is more stable than DNA.

3) RNA has evolved from DNA

Bacteria do not have a well defined nucleus. Since the nucleus contains DNA, it can be concluded that bacteria do not contain DNA.

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