LYSOSOMES:- (LYSO means Splitting, Break down or dissolution and Soma means Body) These are single membrane bounded organelles involved in the break down of materials.
Occurrence:- present in all animal cells except mammalian RBC. In Plants its presence is in doubt. In prokaryotes these are absent.
Structure:- these are single membrane bounded organelles. Lysosome contain strong digestive enzymes and work in the breakdown of food and waste materials.
Function:- A lysosome during its function, fuses with the vacuole that contains the targeted material and its enzymes break down the material.
FORMATION:- lysosomes are formed by the fusion of transport vesicles budded from the trans Golgi network with endosomes, which contain molecules taken up by endocytosis at the plasma membrane.