Endosymbiosis best explains the possible evolutionary beginnings of?

Question

prokaryotes.

cyanobacteria.

eurkaryotes.

all of the above.

Answer 1

Eukaryotes. A long time ago, a bacteria ate another bacteria, and the one that was eaten refused to die. They started to get along alright, and the happy partnership was the beginning of Eukaryotes.

Answer 2

eukaryotes

the mitochondria (ATP making organelle) starts to live in the cell.

Answer 3

Eukaryotes.

According to this this theory ancestoral eukaryotes took in bacteria in their cytoplasm. these bacteria,over the years, evolved into different organelles of the present day eukaryotic cell. eg mitochondrion, chloroplast.

evidences:

1. the organelles like mitochondria show the presence of DNA.

2. Both the DNAs are circular.