> There have been many such endosymbiotic events in the history of life - there are subfields of evolutionary biology that study these processes. Exactly, if m

> There have been many such endosymbiotic events in the history of life - there are subfields of evolutionary biology that study these processes. Exactly, if mitochondria is alive then so is chloroplasts and who knows what else. The line needs to be drawn somewhere, also life and death isn't as clear-cut as many used to believe