the endosymbiotic theory helps to explain the origin of which structures? mitochondria ribosomes nuclei cell…

the endosymbiotic theory helps to explain the origin of which structures? mitochondria ribosomes nuclei cell membranes
Answer
Brief Explanations:
The endosymbiotic theory posits that mitochondria and chloroplasts originated from free - living prokaryotes that were engulfed by a host cell. Mitochondria are thought to have been aerobic bacteria. Ribosomes, nuclei, and cell membranes are not explained by this theory.
Answer:
mitochondria