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Tree of Life
Plant Flower, Tree
Invertebrate Octopus, Ant, Bee, Butterfly, Spider, Lobster
Vertebrate Fish, Seahorse, Ray, Shark, Frog, Turtle, Tortoise, Dinosaur
Bird, Ostrich, Owl, Crow, Parrot
Mammal Bat, Rabbit, Giraffe, Camel, Horse, Elephant, Mammoth
Whale, Dolphin, Walrus, Seal, Polar Bear, Bear, Cat, Tiger, Lion, Dog, Wolf
Monkey, Chimpanzee, Human
These are organized by a classification scheme developed exclusively for Cosma. More…
microorganism : an organism (such as a bacterium or protozoan) of microscopic or ultramicroscopic size — Webster
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. A December 2017 report stated that 3.45-billion-year-old Australian rocks once contained microorganisms, the earliest direct evidence of life on Earth. — Wikipedia
Microbiology is the study of microorganisms, those being unicellular (single cell), multicellular (cell colony), or acellular (lacking cells). Microbiology encompasses numerous sub-disciplines including virology, parasitology, mycology and bacteriology.
Eukaryotic microorganisms possess membrane-bound cell organelles and include fungi and protists, whereas prokaryotic organisms—all of which are microorganisms—are conventionally classified as lacking membrane-bound organelles and include eubacteria and archaebacteria. 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 16s rRNA gene sequence used for bacteria identification. — Wikipedia
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Virus-infected bacteria could provide help in the...
on February 17, 2019 at 4:58 pm
Understanding the relationship between microbes and viruses is beneficial not only for medical research and practical applications but also in marine biology, say researchers. […]
Hope for fighting disease known as Ebola of frogs
on February 15, 2019 at 9:20 pm
Despite widespread infection, some frog populations are surviving a deadly disease that is the equivalent of humankind's Ebola virus. The reason -- genetic diversity. […]
Biologists identify honeybee 'clean' genes known...
on February 15, 2019 at 6:59 pm
The key to breeding disease-resistant honeybees could lie in a group of genes -- known for controlling hygienic behavior -- that enable colonies to limit the spread of harmful mites and bacteria, according to genomics research. The researchers narrowed in on the 'clean' genes known to improve the colony's chance of survival. […]
Study examines how compound damaged DNA to...
on February 14, 2019 at 8:31 pm
In an effort to understand how colibactin, a compound produced by certain strains of E. coli, may be connected to the development of colorectal cancer, researchers are exploring how the compound damages DNA to produce DNA adducts. […]
Hop to it: Researchers evaluate rabbits' evolved...
on February 14, 2019 at 8:30 pm
Researchers have validated the role of specific rabbit genes in contributing to this acquired resistance. […]
Virus-infected bacteria could provide help in the...
on February 17, 2019 at 7:10 pm
Viruses don't always kill their microbial hosts. In many cases, they develop a mutually beneficial relationship: the virus establishes itself inside the microbe and, in return, grants its host with immunity against attack by similar viruses. […]
More scrutiny needed for less-deadly foodborne...
on February 13, 2019 at 8:24 pm
Employing advanced genetic-tracing techniques and sharing the data produced in real time could limit the spread of bacteria—Bacillus cereus—which cause foodborne illness, according to researchers who implemented whole-genome sequencing of a pathogen-outbreak investigation. […]
Newly isolated human gut bacterium reveals...
on February 13, 2019 at 5:29 pm
Research team studies the compelling connection between one of NIH's "most wanted" bacteria and mental health. […]
Hard-to-detect antibiotic resistance an...
on February 11, 2019 at 4:00 pm
Even when antibiotics are used to treat bacteria susceptible to them, sometimes the antibiotic chosen is ineffective. One of the reasons for this is heteroresistance, a phenomenon explored in depth by Uppsala and Emory University researchers in a new study. […]
Scientists advance new technology to protect...
on February 11, 2019 at 2:21 pm
Before the 2014 Toledo Water Crisis left half a million residents without safe drinking water for three days, Dr. Jason Huntley's research at The University of Toledo focused on bacteria that cause pneumonia. […]