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 Microorganisms - Information on the top microbe related searches. Covering bacteria, effective and harmful microbes as well as microbe pictures, details of microorganisms in water and the living soil and more.
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This page lists the Microorganism Types including viruses, bacteria, fungi, protozoa and helminths and also defines the two main living groups prokaryotes and eukaryotes with links to other reference sites showing Microorganism Types.
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This page is a near duplicate of the more popular title Types of Microorganisms because the page titles should be about the same topic.
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Microorganism Types
Micro-organisms are organisms which share the property of being sub-microscopic. They existed long before man and we
have had to adapt to live in an environment where they are far more abundant. Many micro-organisms do not normally
cause disease in man, existing in a state of either COMMENSALISM, where there is little or no benefit or harm to man,
or in MUTUALISM, where there is some benefit gained by both partners. Microorganism Types. This non-harmful balance exists when the immune
system works well, but these same organisms can cause infection when the latter fails. This changed property is shared
by many other micro-organisms which can cause infectious disease in the immunocompetent individual, so-called PATHOGENS. Microorganism Types.
These pathogens fall into five main groups:
Viruses
Bacteria
Fungi
Protozoa
Helminths
In addition, by convention there are two further classes of small agents which are often included in the study of
Microbiology (although not covered in this Microorganism Types website).
Ticks and mites
Mesozoa and leeches
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other lists & sub-divisions
Other scientists will list the following as microorganisms :
Bacteria (eubacteria & archaea), algae, fungi, protozoa, viruses, prions, lichens, slime moulds
Living creatures are divided into two key groups: the prokaryotes, where the DNA in their cells is not enclosed in a
membrane-bound nucleus and the eukaryotes where the cells do have their DNA enclosed in a nucleus and often contain
other membrane-bound organelles as well. Microorganism Types. The eukaryotes include fungi, protozoa, algae, plants and all multicellular
animals. Prokaryotes include bacteria and the mysterious archaebacteria which are prokaryotic in general structure
but also share some characteristics with eukaryotes. Viruses are akaryotic because they are non-cellular. Prions are
not micro-organisms but they are studied by microbiologists.
The most relevant links we could find, placed here free
 Encyclopædia Britannica
- Definitions of Microorganism Types. You need to activate a free trial to fully see this article. www.britannica.com
Lenntech
- ozone disinfection microorganisms. www.lenntech.com
Microbiology online
- Different micro-organisms. www.microbiologyonline.org.uk
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