Select that statement that reﬂects evidence that directly supports the endosymbiotic theory.

Question

Quizplus · Accepted Answer

The endosymbiotic theory suggests that mitochondria (and chloroplasts) were once free-living bacteria that were engulfed by a host cell. The presence of the electron transport system in the mitochondrial cristae in eukaryotes, similar to its location in the cell membrane in bacteria, supports this theory by showing a functional similarity that suggests a common ancestry.

Select That Statement That Reﬂects Evidence That Directly Supports the Endosymbiotic