Question

) In which phase of the viral "life cycle" does the host cell lyse?

A) Lysogenic phase B) Lytic phase C) osmosis D) plasmolysis E) cellular respiration

Answer 1

Lytic phase

There are two phases in life cycle of a virus, Lysogenic phase and lytic phase. In lysogenic phase, the virus enters the bacterial or host cell and keeps on dividing inside it but do not break down the bacterial cell membrane. In this way it remains latent inside the host cell. But in lytic phase the virus breaks down the membrane of host cell to get out of it and infect another cell.

Osmosis is the process of movement of water molecules from a region of higher concentration to a region of lower concentration through a selectively permeable membrane.

When a cell is kept in hypertonic solution, it undergoes plasmolysis which is also known as sell shrinkage. This is because water from cell moves out into the surrounding medium.

Cellular respiration is a process which takes place in mitochondria in eukaryotes to generate ATP which is the energy currency of the cell.

Please rate.