Lysosome

Lysosome and Microtubules

Lysosome( Gk. Lysis = loosing; soma = body)

 It was first reported by de Dure in 1955. These are variously shaped bodies usually bounded by single surface membrane. They are mainly found in animal cells. They contain various digestive and hydrolysis enzymes, which when released, destroy unwanted cellular materials. They are often referred to as “suicidal bags”.
  When the cells are dead, the lysosomee release their enzymes which rapidly digest the cells. They may also function in the breaking down  of cell parts whenever a cell dies.
Lysosome

Lysosome

Microtubules

 

Microtubules

Microtubules

They are submicroscopic unbranched hollow tubes. They are supposed to take part in conduction and contraction. They promote movement of materials within the cell and form a cytoskeleton, which determines and maintains the shape of the cell.
They are used in centriole formation (through centriole are absent in the cells of higher plants) and spindle formation.
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