Question

You just read an article on the Endosymbiotic Theory. Based on what you read, what is the importance of the Endosymbiotic Theory?

Answer 1

The endosymbiotic theory which is also sometimes referred to as symbiogenesis states that all the organelles of the eukaryotic cells are prokaryotic cells that tends to live in a much larger host. This theory is important because it does explains how the eukaryotic cells are able to obtain the needed nourishment that is believed to be replenished by the prokaryotic cells. 

Answer 2

The origin of mitochondria and chloroplasts is explained.

Both organelles were free-living prokaryotes ingested by primitive eukaryotic cells.

Mitochondria and chloroplasts perform aerobic respiration; the host cell provides organic compounds for ATP production.

Eukaryotic cells contain mitochondria and chloroplasts, but these organelles function similar to bacterium, which are prokaryotes.