According to the endosymbiotic theory, which of the following inferences can be made? Please choose the correct answer from the following choices, and then select the submit answer button. The plasma membrane is capable of folding on itself. The simplicity of prokaryotes is in part due to eukaryotic engulfment. An ancestral prokaryote engulfed a eukaryote, therefore eukaryotes and prokaryotes are not as different as they seem. Human beings may have been part bacteria and have an ancestry arising in prokaryotes. Chloroplasts and mitochondria are originally eukaryotes but prokaryotic engulfment caused them to convert to prokaryotes.