Mitosis is a continous process of cell division consisting of 5 phases:
- interphase, the cell is active and growing, carring out metabolic processes.
- prophase, the chromosomes condense,becoming tightly coiled and folded, the centrioles start moving towards the poles of the cell, releasing spindle fibres. the nuclear envelope begins to degrade.
- metaphase, the chromasomes are lined up across the cells equator and spindle fibres join to the centromere.
- anaphase, the spindle fibres begin to retract, pulling the chromatid towards opposite poles
- telophase, the daughter chromasomes are then inclosed in a new nuclear envelope, and the cell membrain begins to pintch into two, around the new nucleus.
interphase metaphase telophase
the order can be remembered as I,P,M,A,T
The cell cycle
The cell as a specific order, and time span for devision this is recordd ith the cell cycle
- G1 the cell is growing and carring out metabolic processes
- S the DNA is replicated at this stage, and chromasomes are duplicated.
- G2 the cell continues to grow, and reproduces organels, such as mitocondria.
- M, this is mitosis, where the cell divides,
diagram of cell cycle