Golgi Apparatus ( dictyosome )
The Golgi apparatus is also known as the dictyosome, as it is inside the plant cell. It is formed from a stack of closely packed membranes and looks like the smooth endoplasmic reticulum in appearance, except that it is a little bit curved. Its location is always near to the cell nucleus. The shuttle vesicles from the endoplasmic reticulum would join it at the bottom. BUt secretory vesicles would budged off continually from its periphery. Some secretory vesicles would be continually suspending in cytoplasm, as the lysosomes and peroxisomes. Others would move towards the plasma membrane. When the vesicle touches the plasma membrane, these membranes fuse and re-arraange to form a hole connecting the lumen of the vesicle to the outside of the cell. Then, by the elasticity of the plasma membrane, the content of the vesicle would be ejected to the environment and the plasma membrane recovers to the prior condition.
(28.08.2006)
