How did mitochondria and chloroplasts arise in eukaryotic cells?
A)Via endosymbiosis, where mitochondria and chloroplasts were independent prokaryotic organisms that were engulfed by a larger cell
B)Via binary fission, where bacteria divided to create mitochondria and chloroplasts
C)Via the endomembrane system that engulfed mitochondria and chloroplasts
D)Via the endomembrane system that enfolded in such a way as to create mitochondria and chloroplasts

Question

Quizplus · Accepted Answer

The most widely accepted theory is the endosymbiotic theory, which proposes that mitochondria and chloroplasts were once free-living prokaryotes that were engulfed by larger host cells. Over time, a mutually beneficial relationship developed, leading to the evolution of eukaryotic cells with these organelles.

How Did Mitochondria and Chloroplasts Arise in Eukaryotic Cells