Question

Are bacteria the only prokaryotic organisms?

Answer 1

No, archaebacteria also are prokaryotes. Prokaryote is defined as a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle. Prokaryotes are divided into two classes: Bacteria and Archaebacteria. The major difference between archaebacteria and bacteria are the difference in the chemical composition of cell wall and cell membrane. The enzymes associated with DNA and RNA metabolism are also different in archaebacteria and bacteria. Bacteria is also known as eubacteria (true bacteria). The example of bacteria includes E. coli, Vbrio cholarea etc. The example of archaebacteria includes Methanosphaera stadtmanae, Halorubrum kocurii etc.