Microorganism

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microorganism : an organism (such as a bacterium or protozoan) of microscopic or ultramicroscopic size — Merriam-Webster See also OneLook

Encyclopedia

Microorganism, or microbe, is a microscopic organism, which may be single-celled or multicellular. Microorganisms include all unicellular organisms and so are extremely diverse. Of the three domains of life identified by Carl Woese, all of the Archaea and Bacteria are microorganisms. These were previously grouped together in the two domain system as Prokaryotes, the other being the Eukaryotes. The third domain Eukaryota includes all multicellular organisms and many unicellular protists and protozoans. Some protists are related to animals and some to green plants. Many of the multicellular organisms are microscopic, namely micro-animals, some fungi and some algae, but these are not discussed here. They live in almost every habitat from the poles to the equator, deserts, geysers, rocks and the deep sea. Some are adapted to extremes such as very hot or very cold conditions, others to high pressure and a few such as Deinococcus radiodurans to high radiation environments. Microorganisms also make up the microbiota found in and on all multicellular organisms. — Wikipedia

Microorganism (Encyclopædia Britannica)
Microorganism (Biology Online)

Life on Earth (Tree of Life)
Oirgin of Life (One Zoom)
Biota (Catalogue of Life)

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Inspiration

Talks about Microorganisms (TED: Ideas Worth Spreading)
Articles about Microorganisms (Big Think)

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Innovation

Science

Microbiology is the scientific study of microorganisms, those being unicellular (single cell), multicellular (cell colony), or acellular (lacking cells). Microbiology encompasses numerous sub-disciplines including virology, bacteriology, protistology, mycology, immunology, and parasitology. Eukaryotic microorganisms possess membrane-bound organelles and include fungi and protists, whereas prokaryotic organisms—all of which are microorganisms—are conventionally classified as lacking membrane-bound organelles and include Bacteria and Archaea. Microbiologists traditionally relied on culture, staining, and microscopy. However, less than 1% of the microorganisms present in common environments can be cultured in isolation using current means. Microbiologists often rely on molecular biology tools such as DNA sequence based identification, for example the 16S rRNA gene sequence used for bacteria identification. — Wikipedia

Microbiology (Encyclopædia Britannica)
Microbiology (Biology Online)

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Preservation

Library

DDC: 579 Microbiology (Library Thing)
Subject: Microbiology (Library Thing)

Subject: Microbiology (Open Library)

LCC: QR Microbiology (UPenn Online Books)
Subject: Microbiology (UPenn Online Books)

LCC: QR Microbiology (Library of Congress)
Subject: Microbiology (Library of Congress)

Subject: Microbiology (WorldCat)

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Participation

Education

Microbiology (Ology, American Museum of Natural History)
The Littlest Organisms (Biology4Kids)

Microbial Life Resources (Science Education Resource Center, Carleton College)
In the Classroom (American Society for Microbiology)
Journal of Microbiology & Biology Education (American Society for Microbiology)

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources

Course

Microbiology (MIT OpenCourseWare)
Microbiology (edX)

Community

More News …

Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

Shaping positive STEM identity for student success
on September 29, 2023 at 6:08 pm
Data show that students who have a strong science, technology, engineering and mathematics (STEM) identity are more likely to take STEM courses and persist to the academic finish line––graduation. Positive STEM identity is multifaceted, but at the core, it is the sense that one "belongs" in STEM and can succeed in STEM. A person with strong STEM identity tends to feel confident of the following:
Widespread antibiotic resistance among...
on September 29, 2023 at 2:18 pm
Scientists have identified the source of antibiotic resistance that emerged within bacteria driving the ongoing Yemen cholera epidemic.
Study shows bacteria in the soil can defy periods...
on September 29, 2023 at 1:59 pm
While many bacteria become inactive during dry spells, specific groups persist and even thrive. A new study, published in Nature Communications and conducted by the Center for Microbiology and Environmental Systems Science (CeMESS) at the University of Vienna, offers ground-breaking insights into bacterial activity during drought periods, with implications for agriculture and our understanding of climate change impacts.
Infecting non-immune cells: Finding defies...
on September 29, 2023 at 12:31 pm
The organisms that cause visceral leishmaniasis, a potentially deadly version of the parasitic disease that most often affects the skin to cause disfiguring disease, appear to have a secret weapon, new research suggests: They can infect non-immune cells and persist in those uncommon environments.
Scientists zero in on the life-threatening...
on September 29, 2023 at 9:47 am
In 2009, a mysterious fungus emerged seemingly from out of thin air, targeting the most vulnerable among us. It sounds like Hollywood, but the fungus in question poses a very real threat. Scientists are scrambling to figure out what makes the life-threatening fungus Candida auris tick—and why even the best infection control protocols in hospitals and other care settings often fail to get rid of it.

Microbes and More News -- ScienceDaily Current science articles on microbes and more. Read about viruses, bacteria, fungi and prions and see related videos.

Decreasing biodiversity may promote spread of...
on September 27, 2023 at 4:31 am
How are environmental changes, loss of biodiversity, and the spread of pathogens connected? The answer is a puzzle. Researchers have now described one piece of that puzzle, showing that the destruction of tropical rainforests harms the diversity of mosquito species. At the same time, more resilient species of mosquitoes become more prevalent -- which also means the viruses they carry are more abundant. If there are many individuals of a given species, those viruses can spread quickly.
By air, rain and land: How microbes return after...
on September 25, 2023 at 4:48 pm
Ecological disturbances like wildfires disrupt microbial communities. Researchers found that dispersal played a pivotal role in re-establishing surface-level communities.
Discovery in mosquitoes could lead to new...
on September 22, 2023 at 6:12 pm
Researchers have made an important finding about Aedes aegypti mosquitoes -- one that could one day lead to better methods for reducing the mosquito-to-human transmission of dengue, yellow fever, Zika, and other harmful and sometimes deadly viruses.
Nanoparticles made from plant viruses could be...
on September 21, 2023 at 7:45 pm
Engineers have devised a new solution to control a major agricultural menace, root-damaging nematodes. Using plant viruses, the researchers created nanoparticles that can deliver pesticide molecules to previously inaccessible depths in the soil. This 'precision farming' approach could potentially minimize environmental toxicity and cut costs for farmers.
How climate warming could disrupt a deep-rooted...
on September 21, 2023 at 7:44 pm
Trees depend on fungi for their well-being. As climate change and global warming cause higher temperatures and amplified drought, little is known about how these important fungi will respond. To investigate this issue, a research team conducted a climate change experiment where they exposed boreal and temperate tree species to warming and drought treatments to better understand how fungi and their tree hosts respond to environmental changes. Their findings revealed that the combined effects of […]

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Related

Here are links to pages about closely related subjects.

Knowledge Realm

Terrestrial (Earth)

Sphere Land, Ice, Water (Ocean), Air, Life (Cell, Gene)
Ecosystem Forest, Grassland, Desert, Arctic, Aquatic

Tree of Life
Microorganism Virus
Prokaryote Archaea, Bacteria
Eukaryote Protist, Fungi, Algae, Protozoa (Tardigrade)
Plant Flower, Tree
Animal
Invertebrate
Cnidaria Coral, Jellyfish
Cephalopod Cuttlefish, Octopus
Crustacean Lobster, Shrimp
Arachnid Spider, Scorpion
Insect Ant, Bee, Beetle, Butterfly
Vertebrate
Fish Seahorse, Ray, Shark
Amphibian Frog, Salamander
Reptile Turtle, Tortoise, Dinosaur
Bird Penguin, Ostrich, Owl, Crow, Parrot
Mammal Platypus, Bat, Mouse, Rabbit, Goat, Giraffe, Camel, Horse, Elephant, Mammoth
Walrus, Seal, Polar Bear, Bear, Panda, Cat, Tiger, Lion, Dog, Wolf
Cetacean Whale, Dolphin
Primate Monkey, Chimpanzee, Human

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Notes

1. The resources on this page are are organized by a classification scheme developed exclusively for Cosma.

Microorganism

Introduction¹

Dictionary