Viruses and Bacteria. Viruses. A virus is a piece of hereditary material (RNA or DNA) that is covered by protein that infects and reproduces in living cells . Viruses are not considered living things because they are unable to reproduce on their own: they require a host cell .
A: Viruses attach to cell.
B: DNA/RNA injected into cell
C: Virus takes control of cell & makes new virus particles.
D: Cell bursts open releasing 100’s of viruses to infect more cells.
B: Virus becomes part of cell’s DNA.
C: Cell divides.
D: Virus becomes active.
E: New viruses are made.
F: Cell breaks open releasing new viruses.