Question

According to the theory of endosymbiosis, describe how mitochondria came to exist within our modern-day eukaryotic cells.

Answer 1

My quick summary: Mitochondria possess their own genome and are hypothesized to have been a sort of bacteria that somehow became incorporated into the cytoplasm of larger cells. Mitochondria are able to respirate in this environment, which is advantageous. For a better, more detailed explanation, check this out: http://en.wikipedia.org/wiki/Mitochondrion#Origin

Answer 2

thank you

Answer 3

http://learn.genetics.utah.edu/content/begin/cells/organelles/

Answer 4

@benjammin