Eubacteria
The unicellular prokaryotes in the domain Bacteria are classified in the kingdom Bacteria.
The three organisms classified in the Kingdom Monera are bacteria, archaea, and cyanobacteria (blue-green algae). These organisms are unicellular and lack a true nucleus, making them prokaryotes.
Bacteria are classified in the kingdom Bacteria.
The eubacteria kingdom includes many types of bacteria, such as Escherichia coli (E. coli), Streptococcus, and Bacillus. These organisms are unicellular prokaryotes that can be found in diverse environments, from soil to the human gut.
There is no single kingdom that is unicellular. All prokaryotes (organisms with no cell nucleus) are unicellular, and they belong to two domains, bacteria and archaea. Eukaryotes, or organisms with a cell nucleus, are divided into four kingdoms, plants, fungi, animals, and protists (although recently scientists began to reclassify protists into multiple separate kingdoms). In each of the fungi and protist kingdoms, there are a variety of members that are unicellular, and also some members that are multicellular. Animals and plants are always multicellular (except possibly one animal group called Myxozoa).
The kingdom with the least amount of species is the kingdom Monera, which consists of unicellular prokaryotic organisms such as bacteria and archaea.
They lack a nucleus. They are prokaryotes. They are unicellular.
Unicellular organisms with no nucleus are called prokaryotes; they do not have a kingdom classification, but have two domains: Archaea and Bacteria.
Bacteria are of the kingdom Prokaryotes Blue-green Algae have now been discovered to actually be prokaryotes, so they have been renamed as Cyanobacteria, of the Prokayote kingdom. Actually they are in the Monera kingdom but nowadays it is in the Blue green algae is in the Archaebacteria Kingdom and bacteria is in the kingdom Eubacteria.
Unicellular.
Bacteria
Prokaryotes that are found in environments that are extreme are classified in the Archaebacteria kingdom. The kingdom consists of single-celled microorganisms.
Bacteria
Although yeast and bacteria are both unicellular organisms, yeast is not a bacterium. Yeast is considered to belong to the Fungus kingdom.
Archaea Domain
bacteria
The kingdom Monera was used to classify many prokaryotes. An example of a prokaryote is any sort of bacteria, such as E. coli. The kingdom Monera did not include any animals since animals are all members of another kingdom, Animalia. In order to be classified as an animal an organism must have eukaryotic cells and, with the exception of sponges, have true tissues. Nothing in Monera meets these requirements. The kingdom system under which Monera existed is no longer used. Today most biologists use a system with 3 domains, two of which used to fit into the category Monera, these are Bacteria and Archaea.
The members of the kingdom Archaebacteria possess bacteria and eukaryote. They are single-celled organisms, prokaryotes, the same size and shape as bacteria, and possess genes and metabolic pathways.