Question

How do protists differ from archaebacteria and eubacteria?

Answer 1

Nature is made up of many living organisms which are varied and different in many aspects. Out of all these organisms, bacteria are the most abundant living species which are seen almost everywhere. Protists are a very diverse group of organisms which are also widely found in the environment but always in the moist surroundings. Both of these organisms are microscopic organisms that can harm as well as do good for humans.

Complete answer:
-Protists are most diverse organisms and they are very difficult to categorize as some of them have animal like, plant like, or fungus like characteristics. They are more evolved than the bacteria, thus it shows a higher degree of cell structure differentiation. Protists are highly complex compared to bacteria. Though both these living organisms have evolved from the same ancestors, there are certain key differences which separate them.
-Archaebacterias constitute a domain of single-celled organisms. These microorganisms lack the cell nuclei and are prokaryotes. Eubacteria lack a membrane-enclosed nucleus, hence they are also prokaryotic organisms, predominantly unicellular, with the DNA in a single circular chromosome, and they have peptidoglycan in the cell wall when present.

Protists differ from archaebacteria and eubacteria in many ways.
-Protists are unicellular eukaryotes, whereas the Eubacteria and the Archaebacteria are unicellular prokaryotes. Archaebacteria and Eubacteria belong to the kingdom Monera; whereas Protists belong to the kingdom Protista. All Monerans have the prokaryotic cell structure. But protists have eukaryotic cell structure and they are unicellular. Protists either lack cell walls or have cell walls made up of cellulose. -Eukaryotes have their cell wall made up of murein or peptidoglycan. In Archaebacteria, their cell wall lacks peptidoglycan but contains non-cellulosic polysaccharides and proteins. Protists have sexual reproduction involving the fusion of gametes. In Archaebacteria and Eubacteria typical sexual reproduction is absent. In Protists, cell division is mitotic type and amitotic in Archaebacteria and Eubacteria

Note: Although bacteria are known to cause diseases in humans, they are also beneficial in many other ways. They maintain a healthy balance in the environment. They maintain the food chain in the environment by a process of recycling nutrients. For maintaining equilibrium in the ecosystem, protists are equally important. They are responsible for the supply of oxygen which is necessary for breathing.