Practice Questions

Viruses are acellular, whereas living cells possess cellular structure.

Integrated viral DNA is called a prophage.

Newly produced phages rupture the bacterial cell releasing progeny viruses.

Dengue virus belongs to the Flavivirus group and contains RNA.

Lipid envelopes are disrupted by detergents, reducing infectivity.

Icosahedral symmetry provides stability and efficient genome packaging.

Reverse transcriptase converts viral RNA into DNA inside the host cell.

Retroviruses carry RNA and use reverse transcriptase to synthesize DNA.

Adsorption is the initial binding of a virus to specific host receptors.

T4 bacteriophage possesses an icosahedral head and tail apparatus.