Biological Classification And System Of Classification Question 405

Question: During the evolution of eukaryotes from prokaryotes, which of the following did not occur?

Options:

A) Infolding of the flexible cell membrane.

B) Loss of the cell wall.

C) A switch from aerobic to anaerobic metabolism.

D) Endosymbiosis of once free-living prokaryotes.

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Answer:

Correct Answer: C

Solution:

The environment was becoming oxygen- rich.

There was not a switch from aerobic to anaerobic metabolism but vice versa.