Answer: The theory states that a prokaryotic cell was consumed or engulfed by a larger cell.
Explanation: The endosymbiotic theory has been widely accepted as one of the possibilities of the origins of mitochondria, chloroplasts, and other eukaryotic organelles and cells.
<span>The endosymbiotic theory deals with the origins of mitochondria and chloroplasts, two eukaryotic organelles that have bacteria characteristics. Mitochondria and chloroplasts are believed to have developed from symbiotic bacteria, specifically alpha-proteobacteria and cyanobacteria, respectively.</span>
