Eukaryotic cells are thought to be derived from prokaryotic cells that underwent phagocytosis without digestion of the phagocytized cell. This mutualistic relationship is explained by the _______ theory.
A) endosymbiotic
B) cell
C) evolutionary
D) parasite
E) prokaryotic

Question

Quizplus · Accepted Answer

The endosymbiotic theory is the idea that eukaryotic cells evolved from symbiotic relationships between prokaryotic cells, where one cell was engulfed by another but not digested, leading to the development of organelles like mitochondria and chloroplasts within the eukaryotic cell.

Eukaryotic Cells Are Thought to Be Derived from Prokaryotic Cells