Which theory states that eukaryotic organelles originated as prokaryotes that survived ingestion by a host cell and ultimately evolved mutualistic relationships with the host cell?
A) Endosymbiont theory
B) Heterosymbiont theory
C) Obligative symbiotic theory
D) Facultative symbiotic theory
E) Autotrophic symbiotic theory

Question

Quizplus · Accepted Answer

The Endosymbiont theory suggests that mitochondria and chloroplasts were once free-living bacteria that were engulfed by a larger cell, leading to a symbiotic relationship beneficial for both, and eventually evolving into the organelles we see in eukaryotic cells today.

Which Theory States That Eukaryotic Organelles Originated as Prokaryotes That