Functions of golgi body, Biology


(1)      Cell secretion - Golgi body is concerned with secretion (export) of macromolecules. Secretion involves three steps:-

(a) Golgi body receives the materials to be secreted from E.R. through it's cis - face. E.R. supplies protiens and lipids to the golgi body.

(b) Materials recieved from E.R. are chemically modified by golgi body. For e.g. glycosidation of proteins and lipids takes place in golgi body and it yields glycoprotiens and glycolipids.

(c) After chemical modifications material are packed in vesicles. Vesicles are pinched off frem trans - face of golgi body and discharged outside the cell (Reverse pinocytosis)btc ~. All the macromolecules which are to be sent outside the cell, move through the golgi body.

So golgi body is also termed as "Principal director of macromolecules".

(2)      Formation of Lysosome - It is collective function of golgi body and E.R.

(3)      Synthesis of cell wall material (Polysaccharide synthesis)

(4)      Cell plate formation - Cell plate is form during cytokinesis of plant cell. Cell plate is found by vesicles of golgi body, fragments of E.R. and fragments of spindle fibres (phragmoplast)

(5)      Formation of middle lamella - Vesicles of golgi body secrete the Ca++  and Mg++  pectates that forms middle lamella between two plant cells.

(6)      Formation of acrosome during spermiogenesis

(7)      Formation of Vitelline membrane - Vesicles of golgi body form vitelline membrane (egg membrane) over ovum.

(8)      Formation for Cortical granules - These are occur in peripheral cytoplasm of egg are actually the modifications of golgi body. These granules form fertilization membrane during fertilization. Fertilization membrane prevents polyspermy. Entry of more than one sperms in single ovum is called polyspermy.

(9)      Recycling and reprocessing of membrane fragments which reach the cytoplasm by endocytosis.

(10)     Golgi body associated with GERL system.

Posted Date: 10/5/2012 7:07:44 AM | Location : United States

Related Discussions:- Functions of golgi body, Assignment Help, Ask Question on Functions of golgi body, Get Answer, Expert's Help, Functions of golgi body Discussions

Write discussion on Functions of golgi body
Your posts are moderated
Related Questions
Explain the De Bakey Type I Dissection? De Bakey Type I Dissection :  Initial steps of the operation are same as previously described. Provision for deep hypothermic ci

From an ecological point of view, species richness alone has limited value. More meaningful measures use the number of different species in a given area (species richness) as well

The presence of advanced plaques of types IV and Va allows clinical symptoms to develop. Atherosclerosis is a biphasic disease; in the first stage, advanced plaques are generated b

Define the Beer's Law - Nutritional  Biochemistry? Beer's law states that the concentration of a substance is directly proportional to the amount of light absorbed or inversely

Q. Guiding and overseeing actions of Consciousness? Guiding and overseeing actions: Consciousness connects brain and body states with external occurrences. In order to functio

How nutritional status influences the age? The nutritional status influences the age-related rate of functional decline in many organ systems in the body. Nutrition is also an

What are the benefits of increasing the growth of bifidobacteria? Bifidobacteria displaces potential pathogens selectively, showing an antibiotic like effect, which is unrelate

Explain the Recombinantion of DNA ? Recombinant DNA is made by combining DNA from more than one source - often from very different species. The technique is now the basis fo

What are DNA ligases? How do these enzymes participate in the recombinant DNA technology? DNA ligases are enzymes specialized in tying the complementary DNA chains that produce

Gastropods - Feeding and Digestion in Molluscs In several gastropods the digestion is extracellular. Though, some herbivore gastropods like Crepidula are ciliary feeders and h