AP Success - AP Biology Conceptual Analysis: Evolution - Origins of Cell Compartmentalization

The evolution of eukaryotic cells from prokaryotic ancestors represents a key transition in the history of life. The defining feature of eukaryotic cells is their compartmentalization into distinct organelles, which allows for increased cellular complexity and specialization. The endosymbiotic theory is a widely accepted explanation for this transition.

Describe the endosymbiotic theory and its role in the evolution of cell compartmentalization.

The mitochondria and chloroplasts in eukaryotic cells contain their own DNA, which is circular and similar to that of bacteria. Explain how this observation supports the endosymbiotic theory.

If a mutation occurred in a prokaryotic organism that allowed it to survive inside another cell without being digested, predict the potential evolutionary implications.

Scientists claim that the presence of double membranes in mitochondria and chloroplasts is evidence of endosymbiosis. Justify this claim using the concept of cell compartmentalization and endosymbiotic theory.