Which organelle was once an independent aerobic prokaryote engulfed by an anaerobic prokaryote?
A)nucleus
B)mitochondrion
C)plastid
D)ribosome
E)endoplasmic reticulum

Question

Quizplus · Accepted Answer

The organelle that was once an independent aerobic prokaryote engulfed by an anaerobic prokaryote is the mitochondrion. This is supported by the endosymbiotic theory, which suggests that mitochondria evolved from bacteria that were engulfed by ancestral eukaryotic cells.

Which Organelle Was Once an Independent Aerobic Prokaryote Engulfed by an Anaerobic