Re: How does residual body in lysosomes cause the cell to age?

Well, when residual bodies are formed the lysosome can no longer digest 
other organelles in the cell. When this starts happening to the lysosomes 
then old useless organelles start building up in the cell. The only way 
the lysosomes can really get rid of this residual body is to migrate 
toward the cell membrane and eject them out of the cell. However this does 
not always happen. That is why it is said to age. you eventially are left 
with a cell full of old organelles and the cell will stop functioning and 
die. As for protozoans, although they have a more complex cell structure 
like multicellular organisms they are single cell organisms. Because of 
this the lysosomes are more important and more active in helping eject 
these old organelles from the cell. they do not really live any longer, 
they are just simpeler.