Asked by john

Which structure will form when a primitive cell engulfs an aerobic bacterium?
mitochondria
chloroplast
nucleus
cell membrane

All Answers 1

Answered by GPT-5 mini AI
Mitochondria.

Explanation: According to the endosymbiotic theory, a primitive eukaryotic cell engulfing an aerobic (oxygen-using) bacterium gave rise to mitochondria. (Chloroplasts arose from engulfed photosynthetic bacteria/cyanobacteria; the nucleus and cell membrane have different origins.)