Functions of golgi body, Biology

FUNCTIONS

(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
prepare a power point presantation of respiratry system

In peas, tall plants are dominant to short plants. A cross between a tall pea plant and a short pea plant results in half the progeny being tall, and the other half being short. Th

Name and explain the mechanisms of heat loss that are contributing to Joel's feelings of coldness. Be sure to name ALL the mechanisms that are contributing!

Simple diffusion Only comparatively small uncharged or hydrophobic molecules (H2O, O2, and CO2, other gases, urea and ethanol)   cross   the lipid   bilayer   through simple

Define the Poverty and hunger - mutually causes, devastating effects? Measures of food deprivation, nutrition and poverty are strongly correlated. Countries with a high prevale

Define the importance of Iodine in human? Iodine derives the nutritional importance as a constituent of thyroid hormones, 3,5,3',5' tetraiodo-thyronine (thyroxine or T 4 ) and

THORACI C CAVITY - Thoracic cavity is air tight. On dorsal side vertebral column present. On ventral side sternum present. On lateral side 12 pairs ribs present. On p

Explain about the Complete proteins? We now know that proteins are composed of amino acids and that proteins differ in their amino acid make-up. Proteins lacking in one or more

Define Drug effects on Metabolism of dietary components? Drugs can also compete with, or inhibit, the metabolic conversion of some micronutrients to their active metabolites,

Q. What is the crystallization of a virus? What is the significance of this process? Crystallization is the procedure of transformation of viral components into organized solid