Evolution of Eukaryotic Cell

Vocabulary terms regarding the Endosymbiotic Theory and the evolutionary transition from prokaryotic to eukaryotic cells.

Prokaryotic cell origin

Life forms that appeared approximately $3.8$ billion years ago.

Endo

A prefix meaning inside.

Symbiot

A mutual relationship where both of the organisms are benefitted.

Endosymbiotic Theory

The evolutionary theory describing how a prokaryotic cell evolved into a eukaryotic cell by engulfing smaller cells.

Mitochondria evolution

Organelles that evolved from engulfed aerobic bacteria which maintained the $O_2$ supply in the cell.

Chloroplast evolution

Organelles that evolved from engulfed cyanobacteria, providing a food source for the cell.

Eukaryotic cell diameter

The size of a typical eukaryotic cell, which is approximately $10-100\text{ }μm$.

Eukaryotic cell characteristics

Cells characterized by having a true, well-defined nucleus and cytoplasmic organelles.

Aerobic eubacteria

The specific type of prokaryote from which mitochondria were formed.

Photosynthetic Eubacteria

The group of bacteria that served as the precursor for the formation of chloroplasts.

Primitive Eukaryotic Cell Role

The larger cell that provided food, shelter, and protection to engulfed small, motile prokaryotic cells.