Which of the following was not an early step in the evolution of eukaryotic cells?
A) Development of a flexible cell surface
B) Development of a cytoskeleton
C) Development of a nuclear envelope
D) Endosymbiotic acquisition of certain organelles
E) Development of ribosomes

Question

Quizplus · Accepted Answer

Ribosomes are present in both prokaryotic and eukaryotic cells, so their development was not a unique step in the evolution of eukaryotic cells. The other choices - development of a flexible cell surface, development of a cytoskeleton, development of a nuclear envelope, and endosymbiotic acquisition of certain organelles - represent key steps in the evolution of eukaryotic cells.

Which of the Following Was Not an Early Step in the Evolution