Prokaryote
Prokaryotes are organisms composed of nucleus free prokaryotes. Creatures with nucleated cells are called eukaryotes. Although the mucus germs live in a multi-cellular organism during their lifetimes, cyanobacteria form a massive cluster, but most prokaryotes are single-celled. The term prokaryote originates from the Greek πρό- meaning "before" and the Greek καρυόν meaning "nuclear". Prokaryotes do not have nuclei, mitochondria, or any other organelles. In other words, the water-soluble components in all the cells of prokaryotes are located in the same space surrounded by the cell membrane. Prokaryotes are divided into bacteria and archaea. Archaea were originally thought to live only in desolate conditions such as extreme temperature, pH, radiation, but are found in all kinds of settlements. We think that the first cell that was born was a prokaryotic cell, and cell membranes, cell walls, and genetic forms vary widely.