➗ Protein control of cell division


The Cytoskeleton Cell cycle and Mitosis

Overview of Mitosis

Stages of Mitosis

Prophase

Metaphase

Anaphase

Telophase

Cytokinesis

Cell Regulation and Apoptosis


 

The cytoskeleton

 

Cell division requires the active remodelling of the cell’s cytoskeleton. The cytoskeleton is made of multiple kinds of protein that offer it the right structure and aid during the process of division.

 

The centriole is a tubey spaghetti thing that aids in cell division when the duplicated chromosomes need to move into their subsequent new offspring cells from the parent cell (during mitosis).

 

They’re made of a special protein called tubulin because they’re tubeeeeeeeeeeeees. Why didn’t they call it spaghettulin? I guess spaghetti aren’t hollow but…

Microtubules also play a key part in how cell organelles are moved and placed within the cell. Two associated centrioles form the centrosome. The microtubules are also where spindle fibres extend from when they separate chromosomes during cell division.

 

Cell cycle and mitosis

 

Cell cycle

 

The cell cycle refers to the distinct stages through which a cell goes, from the moment it becomes a cell to the moment it divides to result in 2 separate cells. Bear in mind that some cells cease to divide any longer after a certain period of time, depending on cell type. If that’s the case, they are said to be in resting phase termed G0.

A decrease in the cell cycle beyond appropriate levels would lead to degenerative disease, while too high an increase would cause….