Question

Which of the following is true for viruses?A. They invariably contain DNA.B. They multiply only in host cell.C. They occur only inside bacteria.D. Their genetic material is RNA.

Answer 1

Viruses multiply only in a host cell. After penetrating the host cells, they take control of the cell functions promoting the synthesis.

They can be termed as infectious agents as they alter the nature of the living cells and tissues.

As the multiplication of the virus increases the scope of the disease also increase as the immune system weakens due to their attack.

They can either have DNA or RNA as their genetic material.

Answer 2

Answer:

They multiple only in host cell

Explanation:

Because they are obligate parasites .they active inside the host cell and inactive outside the body.They also behaviour like both non-living and living.