The kind of cell that does not contain membrane-bound organelle is a prokaryotic cell. It is also one of the oldest types of cells in existence. The prokaryotic cell structure can be observed in Cyanobacteria, E.coli, Archaea and other bacteria.
Prokaryotes are ancient, evolving over 3.5 million years ago. Research also points out that the eukaryotic cell gradually evolved from the prokaryotic cell, gradually giving rise to multicellular organisms. Today, these prokaryotes are found nearly everywhere. Some are disease-causing, such as E.Coli. Others are extremophiles, thriving in extremely hostile conditions such as deep-sea thermal vents, freezing cold lakes and searing hot geysers.
Explore more about the prokaryotic cell or other related concepts by registering at BYJU’S.