GOLGI APPARATUS
Golgi apparatus was discovered by Comillo Golgi in 1898. It is found in eukaryotic cells.
Golgi apparatus consists of stacks of flattened membrane bound sacs or flattened cavities or vesicles called Cisternae (5 – 8).
The whole organelle is a shifting, flexible structure; vesicles are constantly being added at one side and lost from the other. Generally, vesicles fuse with the forming face (the one nearest to the nucleus) and leave from the maturing face (the one nearest to the cell surface membrane).
Golgi complex has proteins, carbohydrates, glycoproteins and some enzymes.
FUNCTIONS
The (Golgi complex appears to be involved with the synthesis and modification of proteins, lipids and carbohydrates.
Major functions of Golgi complex are formation of conjugated molecules and Secretions.
Proteins made on the ribosomes attached to ER are packaged into the vesicles by the Endoplasmic Reticulum .Some of the vesicles join with the Golgi complex and the proteins they contain are modified before they are secreted out of the cell.
Golgi apparatus + Golgi vesicles = Golgi complex
Secretions are products formed in the cells on ribosomes and then pass to the outside through endoplasmic reticulum and Golgi apparatus. In plants Golgi apparatus is involved in the synthesis of Cell wall.