Eukaryotes arose when
A) an aerobic bacterium consumed an archaean by phagocytosis.
B) a photosynthetic bacterium consumed an aerobic bacterium by phagocytosis.
C) an archaean consumed an aerobic bacterium by phagocytosis.
D) a ciliate consumed an archaean by phagocytosis.
E) a ciliate consumed an aerobic bacterium by phagosytosis.

Question

Quizplus · Accepted Answer

The origin of eukaryotes is thought to involve an archaean host cell engulfing an aerobic bacterium through phagocytosis, leading to a symbiotic relationship that eventually evolved into the mitochondria found in modern eukaryotic cells.

Eukaryotes Arose When