Question

Prophage is viral genome
A.Freshly synthesised
B.Inoculated to a bacterium
C.Outside the host cell
D.Incorporated and integrated to host genome

Answer 1

Hint: Bacteriophages are exceedingly particular, with most contaminating as it were a single species of microbes. To enter a bacterial cell, bacteriophages connect to particular receptors on the surface of the cell.

Complete answer:
A prophage could be a bacteriophage genome which is embedded and integrated into the circular bacterial DNA chromosome. This is often an inactive frame of a phage in which the viral qualities are displayed within the bacterium without causing disruption of the bacterial cell. Bacteriophages may have a lytic cycle or a lysogenic cycle, and a couple of infections are able to carry out both. When the infection of a cell by a bacteriophage comes about within the generation of modern virions, the disease is said to be beneficial. A prophage may be a bacteriophage (often abbreviated to "phage") genome embedded and coordinates into the circular bacterial DNA chromosome or exists as an extrachromosomal plasmid. Usually, an idle shape of phage, in which the viral qualities are shown within the bacterium without causing disturbance of the bacterial cell.

Hence, the correct answer is option (D)

Note: The word pro means ''before'' i.e. prophage is a stage of viruses in the form of the genome which is inserted into the host DNA before it is activated in the host.
Most viruses have either RNA or DNA as their hereditary material. This might either be single- or double-stranded. The complete infectious molecule is called a virion which comprises the nucleic acid and an outer covering of protein.