Golgi apparatus were first observed by Camillo Golgi
(1898) .
These are called "dictiyosomes" in plant cells.
Golgi apparatus consists of many flat disc shaped sacs
i.e. “Cisternae”. Cisternae are stacked parallel to each other. Golgi cisternae
are concentrically arranged near the nucleus. Its forming face is convex i.e. “cis”
and maturing face is concave i.e. “trans” face. Both faces of golgi apparatus
are different but interconnected.
Functions –
The golgi apparatus performs the functions of
packaging materials and deliver either to intra-cellular targets or to secrete
outside of the cell. Material to be packaged in the form of vesicles from the
endoplasmic reticulum fuse with “cis” face and move towards “trans” face. Proteins
formed by ribosomes on endoplasmic reticulum are modified in cisternae of golgi
bodies before being released from “trans” face.
Golgi apparatus are associated with the synthesis of
glycoproteins and glycolipids.
Golgi apparatus are also involved in formation of
lysosomes.
The “Acrosome” of sperm of animals is derived from
golgi apparatus.
