The endosymbiotic theory proposes that mitochondria and chloroplasts originated from
- A
Self-assembling membranes formed by a primitive eukaryote
- Bcheck_circle
Free-living prokaryotes engulfed by an ancestral eukaryote
- C
Inverted cell-membrane invaginations within an ancestral eukaryote
- D
Viral particles permanently incorporated into an ancestral eukaryote
Explanation
Their double membranes, own DNA, ribosomes, and binary fission all point to bacterial origin.