Question

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

Explanation:

According to the end - symbiotic theory, when a primitive cell engulfs an aerobic bacterium, the aerobic bacterium evolves into mitochondria. Chloroplasts are thought to have originated from the engulfment of photosynthetic bacteria. The cell membrane and nucleus are not formed by engulfing aerobic bacteria.

Answer:

mitochondria