<P> Prokaryotic cells were the first form of life on Earth , characterised by having vital biological processes including cell signaling and being self - sustaining . They are simpler and smaller than eukaryotic cells , and lack membrane - bound organelles such as the nucleus . Prokaryotes include two of the domains of life , bacteria and archaea . The DNA of a prokaryotic cell consists of a single chromosome that is in direct contact with the cytoplasm . The nuclear region in the cytoplasm is called the nucleoid . Most prokaryotes are the smallest of all organisms ranging from 0.5 to 2.0 μm in diameter . </P>
<P> Prokaryotic cells were the first form of life on Earth , characterised by having vital biological processes including cell signaling and being self - sustaining . They are simpler and smaller than eukaryotic cells , and lack membrane - bound organelles such as the nucleus . Prokaryotes include two of the domains of life , bacteria and archaea . The DNA of a prokaryotic cell consists of a single chromosome that is in direct contact with the cytoplasm . The nuclear region in the cytoplasm is called the nucleoid . Most prokaryotes are the smallest of all organisms ranging from 0.5 to 2.0 μm in diameter . </P>
what type of bacteria preceded the eukaryotic cell
what type of bacteria preceded the eukaryotic cell
Prokaryotic cells
Prokaryotic cells