Lysosomes

• Lysosomes are membrane bound sacs filled with digestive enzymes .
• Lysosomes are responsible for keeping the cell clean of any foreign materials or old, out-of-function organelles .
• They maintain this function with the help of enzymes capable of digesting all organic material.
• The enzymes are made by RER .
• These are also known as the “suicidal bags” of the cell.

Why this name? 

• In case of cell damage, lysosomes may burst , spilling the digestive enzymes in the cell.
• The enzymes digest their own cell , thus killing it.

NOTE: Lysosomes are present only in animal cells . Plants cells do not need it .