Each type of organelle has a specific role within the cell this is called division of labour.
Cells contain a network of fibres made of protein. These fibres keep the cell's shape stable by providing an internal framework called the cytoskeleton.
There are other fibres known as microtubules. These are cylinders about 25nm in diameter. They are made of protein called tubulin. Microtubules may be used to move a microorganism through a liquid, or to waft a liquid past the cell.
Other proteins present on the microtubules move organelles and other cell contents along the fibres. This is how chromosomes are moved during mitosis. It is how vesicles move from the endoplasmic reticulum to the Golgi apparatus. These proteins are known as microtubule motors. They use ATP to drive these movements.
Comments
No comments have yet been made