Prokaryotes have no membrane-bound organelles, thus bacteria are prokaryotic organisms.
Eubacteria are distributed more widely than any other group of organisms. Most bacteria are heterotophic, meaning that they derive their energy from organic molecules made by other organisms. Hererotrophic bacteria are decomposers because they feed on dead organic matter and release nutrients locked in dead tissue. Bacteria are produced asexually via fission, in which a cell's DNA replicates and the cell pinches in half without the nuclear and chromosomal events associated with mitosis. Some bacteria have genetic recombination via conjugation, in which all or part of the genetic material of one bacterium is transferred to another bacterium and a new set of genes is assembled.