Protists are difficult to classify, and classification has changed over time. Modern definitions of protists are: "any eukaryote that is not an animal, (land) plant, or (true) fungus" and the second, which describes them mostly by functional or biological terms: "eukaryotes that are never multicellular, that either exist as independent cells, or if they occur in colonies, and do not show differentiation into tissues."
Modern classification uses monophyletic groups that are based on ultrastructure, biochemistry, and genetics.
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The literal translation of the word prokaryote is " before the kernel ", which means before the nucleus. So, prokaryote cells do not have a nucleus, but have loose genetic material in circular chromosomes ( with not unusual plasmids, also circular ) and no membrane bound organelles.
the nucleus of bacterial cell is not well organised like the cells of multicellular organisms.there is no nuclear membrane.the cells having nuclear material without nuclear membrane are termed as prokaryotic cells.the organisms with these kind of cells are called prokaryotes. (pro:primitive and karyon :nucleus).bacteria and blue green algae(cyanobacteria) is the only organisms in the universe that is prokayotic.
Prokaryotes are classified into their own kingdoms and domains. They are divided into two domains, Archaea and Bacteria. Archaea and Bacteria have their own kingdoms, the archaebacteria (or "ancient" bacteria) and eubacteria (the true "true" bacteria) respectively.
****Prokaryotes are classified by:
~Biological species
~morphological species
~genetic species
~biochemistry
Bacteria and Archea
The two groups of organisms that include all prokaryotes are Bacteria and Archaea.
Archaea and Bacteria
Bacteria and Archaea
Actually, there are more than two 'kingdoms' in modern biological classification. Modern biologists recognize three 'domains' of life: Bacteria, Archaea, and Eukarya. Bacteria and Archaea are prokaryotes.
Prokaryotes belong to two taxonomic domains: the bacteria and the archaea.
archaebacteria and eubacteria
prokaryotes and eukaryotes
The two classifications of critical information are unclassified and classified.
There are many types of classifications, but the answer to your question is probably eukaryotes and prokaryotes. (However, it could be diploid and haploid or even just red blood cells and white blood cells).
prokaryotes have no nucleus and include bacteria euakryotes have a nucleus and include plant and animal cells
The two classifications of critical information are unclassified and classified.
The two classifications of critical information are unclassified and classified.
Archeobactetia
The two classifications are: soprano (high voices), and alto (lower voices)
The two classifications of wood are hardwood and softwood.
Two simple classifications of books are fiction and non-fiction.
He uses plants and animals for both of his classifications