A Prokaryotic Cell Living Inside Another Cell

What is a prokaryotic cell that takes up residence in another cell's cytoplasm called?

A prokaryotic cell that lives inside another cell's cytoplasm is referred to as an endosymbiont.

Understanding Endosymbiont

Endosymbiont Definition: An endosymbiont is a prokaryotic cell that establishes itself within another cell's cytoplasm, whether that be a host prokaryotic or eukaryotic cell. The term 'endosymbiont' comes from the Greek words 'endo', meaning 'inside', and 'symbiont', meaning 'living together'. This concept is central to the endosymbiotic theory, which proposes that some eukaryotic organelles were once independent prokaryotic organisms that formed a symbiotic relationship with larger cells. Endosymbiotic Theory: The endosymbiotic theory suggests that mitochondria and chloroplasts, key organelles in eukaryotic cells, were originally independent prokaryotic organisms. These cells may have been engulfed by a larger host cell, where instead of being destroyed or digested, they developed a mutually beneficial relationship with their host. This theory underpins our understanding of the origins of complex eukaryotic cells. Conclusion: In conclusion, an endosymbiont is a prokaryotic cell that lives inside another cell's cytoplasm, contributing to the development of eukaryotic cells as we know them today. The endosymbiotic theory sheds light on the evolution of cellular life and the interconnectedness of organisms at the microscopic level.
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