What are the stages of the cell cycle?

Before proceeding to describe the phases of the cell cycle, it is necessary to find out what the cell cycle is. The cell cycle is understood as the period of a cell’s existence from its formation to the moment of death. The lifespan of each cell is individual. Many cells, most often cells of an adult organism, can enter cell cycles every 12 to 36 hours. Cell cycles have a varied process duration from 30 minutes to 24 hours. On average, the duration between mitoses lasts approximately 10 to 24 hours.

There are several cycles of a cell’s existence. The first cycle is called the period of cell growth. It includes several phases:

Phase 1 – phases of initial growth, during which the synthesis of proteins and mRNA and other cellular components takes place;

Phase 2 includes the process of DNA replication of the cell nucleus, during this phase there is a doubling of centrioles (if any).

Phase 3 includes preparation for mitosis.

The second cycle is the cycle of cell division. It includes 2 phases.

In the first phase, cell division occurs and the second stage is cytogenesis or division of the cytoplasm.