Multiple Choice
The endosymbiont hypothesis proposes all of the following EXCEPT
A) mitochondria and chloroplasts were once free-living bacteria.
B) a nucleated cell engulfed an aerobic bacterium which evolved into mitochondria.
C) prokaryotes evolved when an aerobic bacterium engulfed a cyanobacterium.
D) chloroplasts originated when a nucleated cell engulfed a cyanobacterium.
Correct Answer:

Verified
Correct Answer:
Verified
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