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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
Microbes and More News -- ScienceDaily Current science articles on microbes and more. Read about viruses, bacteria, fungi and prions and see related videos.
Interactions between bacteria and parasites
on September 18, 2019 at 4:25 pm
A team has completed the first study of the effects of a simultaneous infection with blood flukes (schistosomes) and the bacterium Helicobacter pylori -- a fairly common occurrence in some parts of the world. They identified a complex interaction which resulted -- among other effects -- in a weakening of the adverse impact of the pathogens acting individually.
Microbe chews through PFAS and other tough...
on September 18, 2019 at 12:32 pm
In a series of lab tests, a relatively common soil bacterium has demonstrated its ability to break down the difficult-to-remove class of pollutants called PFAS, researchers said.
Microbiome may be involved in mechanisms related...
on September 17, 2019 at 11:36 pm
New study suggests the gut microbiome has a role in mechanisms related to muscle strength in older adults. Researchers found differences in bacterial profiles of older adults with high and low physical function, bacterial and strength differences in mice colonized with fecal samples from the adults.
Fruit flies' microbiomes shape their evolution
on September 17, 2019 at 11:36 pm
In just five generations, an altered microbiome can lead to genome-wide evolution in fruit flies, according to new research.
Programmable swarmbots make flexible biological...
on September 17, 2019 at 5:30 pm
Biomedical engineers have developed a new platform to create biological drugs using specially engineered bacteria that burst and release useful proteins when they sense that their capsule is becoming too crowded.
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.
Study shows interactions between bacteria and...
on September 18, 2019 at 4:42 pm
A team at the Technical University of Munich (TUM) has completed the first study of the effects of a simultaneous infection with blood flukes (schistosomes) and the bacterium Helicobacter pylori—a fairly common occurrence in some parts of the world. They identified a complex interaction which resulted—among other effects—in a weakening of the adverse impact of the pathogens acting individually.
Bat influenza viruses possess an unexpected...
on September 17, 2019 at 4:25 pm
Bat-borne influenza viruses enter host cells by utilizing surface exposed MHC-II molecules of various species, including humans. Now, an international research team from Germany (Medical Center—University of Freiburg and Friedrich-Loeffler-Institut, island of Riems) and the United States (Colorado State University, Fort Collins and Kansas State University, Manhattan) addressed concerns about the zoonotic spill-over potential and discovered an unexpected high genetic plasticity of the bat […]
Colloidal nanotweezers are new tool for advanced...
on September 17, 2019 at 1:20 pm
Tools for manipulating small suspended particles such as cells, micro-particles and nanoparticles play an essential role in the advancement of fundamental science and discovery of new technologies. Especially, manipulation of materials with light has led to significant breakthroughs in diverse field from atomic physics to microbiology and molecular medicine. More than 30 years ago, Arthur Ashkin from Bell labs first proposed a device that used focused laser light to trap objects which shared […]
Genetically engineered plasmid can be used to...
on September 16, 2019 at 5:00 pm
Researchers have engineered a plasmid to remove an antibiotic resistance gene from the Enterococcus faecalis bacterium, an accomplishment that could lead to new methods for combating antibiotic resistance. The research is published this week in Antimicrobial Agents and Chemotherapy, a journal of the American Society for Microbiology.
Like an instruction manual, the genome groups...
on September 16, 2019 at 3:00 pm
Every living organism's cell has a complete copy of DNA, which is condensed tightly in chromosomes. Every time the cell needs to perform a function, it activates genes that open or close different regions in the DNA. Like following an instruction manual with consecutive pages, it's easier to activate two genes that are closer together to complete a function.