U6.1 cell proliferation

Words:

Cell proliferation of cells proliferation

Mitosis mitosis

Cell cycle

Interphase split between the two phases

Amitosis No wire splitting

The cells proliferate through division.

Before cell division, certain material preparation must be carried out.

Cell proliferation consists of material preparation and cell division throughout the continuous process.

Eukaryotic cell division mode:

Mitosis, no silk division, meiosis

Mitosis:

Eukaryotic cells are the main way of cell division. Mitosis of cells is cyclical.

That is, continuous splitting of cells, starting from the completion of a single division, until the next division is complete, for a cell cycle.

Mitosis Significance:

After replicating the chromosomes of the parental cells (in essence, DNA replication), they are accurately assigned to two sub-cells. Because of the genetic DNA on the chromosome, genetic stability is maintained between the parent and the offspring of the cell.

Inter-division period

The cells precede the end of a division to the next division.

Time for Cell cycle 90%-95%

The fission period is active material preparation for the division, complete DNA replication and related protein synthesis, while the cells grow moderately.

No wire splitting

The cells are first extended, the nucleus is recessed inward and divided into two nuclei,

The entire cell splits from the middle into two parts, forming two sub-fine.

Because there is no spindle and chromosome changes in the process of splitting, it is called No silk division.

The ratio of cell surface area to volume. The expansion bubble in protozoa cells is the ratio of the surface area to the volume of the membrane.
The cell's nuclear-mass ratio, the cell size controlled by the nucleus is proportional to the size of the nucleus. So the larger cells, such as paramecium, have two nuclei, guaranteeing a normal nuclear-to-mass ratio.
Then there are generally 2 nuclei that can reduce the burden on the cells themselves.

U6.1 cell proliferation