Which anatomical feature of eukaryotes played the biggest role in their success in high levels of atmospheric oxygen?
A) Flexible cell membrane
B) Mitochondrion
C) Chloroplast
D) Well-developed cytoskeleton
E) Digestive vacuoles

Question

Quizplus · Accepted Answer

The mitochondria played the biggest role in the eukaryotes' success in high levels of atmospheric oxygen. This is because mitochondria are highly efficient in creating energy through aerobic respiration, which requires oxygen. As atmospheric oxygen levels increased, eukaryotes with mitochondria were able to thrive and outcompete other organisms that relied on anaerobic respiration for energy.

Which Anatomical Feature of Eukaryotes Played the Biggest Role in Their