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Difference Between Endosymbiosis and Invagination | Endosymbiosis vs Invagination


The key difference between endosymbiosis and invagination is that endosymbiosis is a theory that explains the origin of mitochondria and chloroplasts inside the eukaryotic cell while the invagination is a process that explains the origin of the nucleus and other cell organelles through the formation of invagination from the plasma membrane to the cell interior.

Scientists believe that eukaryotic cells have evolved from prokaryotic cells. They have developed many theories to explain how this evolution has occurred. Endosymbiosis is one such theory that explains the origin of mitochondria and chloroplast inside the eukaryotic cells from the prokaryotic bacteria. Whereas, invagination is a process that explains the origin of the nucleus and other membrane-bound organelles inside the eukaryotic cell.

CONTENTS

1. Overview and Key Difference
2. What is Endosymbiosis 
3. What is Invagination
4. Similarities Between Endosymbiosis and Invagination
5. Side by Side Comparison – Endosymbiosis vs Invagination in Tabular Form
6. Summary

What is Endosymbiosis?

Endosymbiosis is a hypothesized process that explains the origin of the eukaryotic cell from a prokaryotic cell. It is one of the important events in evolution. Hence, it is an accepted theory in biology. Endosymbiosis theory describes how mitochondria and chloroplasts enter eukaryotic cells. These two organelles have their own DNA. Thus, it is believed that mitochondria have originated in eukaryotic cells from autotrophic alphaproteobacteria via endosymbiosis. This is a result of a symbiotic relationship between a primitive eukaryotic cell and an autotrophic bacterium. The primitive eukaryotic cell has engulfed the bacterium and eventually, their symbiotic relationship has lead to the origin of mitochondria in eukaryotic cells.