News tagged with organisms
New research identifies risks, interventions for children's GI health
An increasing number of U.S. children are experiencing gastrointestinal issues that require interventions to resolve, according to research presented at Digestive Disease Week (DDW).
Health
10 hours ago |
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To suppress or to explore? Emotional strategy may influence anxiety
When trouble approaches, what do you do? Run for the hills? Hide? Pretend it isn't there? Or do you focus on the promise of rain in those looming dark clouds? New research suggests that the way you regulate ...
Psychology & Psychiatry
May 13, 2013 |
3 / 5 (2) |
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New mechanism to prevent type 2 diabetes in obese individuals
A new Montréal study conducted by Dr. May Faraj, associate research professor at the Université de Montréal and invited scientist at the IRCM, along with her research team and medical collaborators, shows ...
Medical research
May 17, 2013 |
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Researchers identify new circadian clock component
Northwestern University scientists have shown a gene involved in neurodegenerative disease also plays a critical role in the proper function of the circadian clock.
Genetics
May 16, 2013 |
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Stem-cell-based strategy boosts immune system in mice
Raising hopes for cell-based therapies, UC San Francisco researchers have created the first functioning human thymus tissue from embryonic stem cells in the laboratory. The researchers showed that, in mice, ...
Immunology
May 16, 2013 |
4.8 / 5 (5) |
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WHO says single yellow fever shot is enough
(AP)—The World Health Organization says a yellow fever booster vaccination given 10 years after the initial shot isn't necessary.
Diseases, Conditions, Syndromes
May 17, 2013 |
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H1N1 discovered in marine mammals
Scientists at the University of California, Davis, detected the H1N1 (2009) virus in free-ranging northern elephant seals off the central California coast a year after the human pandemic began, according ...
Diseases, Conditions, Syndromes
May 15, 2013 |
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Study evaluates long-term effectiveness of surgery for pelvic organ prolapse
Results after seven years of follow-up suggest that women considering abdominal sacrocolpopexy (surgery for pelvic organ prolapse [POP]) should be counseled that this procedure effectively provides relief from POP symptoms; ...
Surgery
May 14, 2013 |
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Saudi health workers sickened by SARS-like virus
A deadly new respiratory virus related to SARS has apparently spread from patients to health care workers in eastern Saudi Arabia, health officials said Wednesday.
Diseases, Conditions, Syndromes
May 16, 2013 |
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Two new diseases could both spark global outbreaks
Two respiratory viruses in different parts of the world have captured the attention of global health officials—a novel coronavirus in the Middle East and a new bird flu spreading in China.
Diseases, Conditions, Syndromes
May 13, 2013 |
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First proof of patient-to-nurse infection of coronavirus, WHO says
Two Saudi health workers have contracted the deadly coronavirus from patients, marking the first evidence of transmission in a hospital setting, the World Health Organization said Wednesday.
Diseases, Conditions, Syndromes
May 15, 2013 |
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China bird flu devastates Shanghai family
The virus has already killed her mother, and Kelly Gu's father lies critically ill with H7N9 bird flu in a Shanghai hospital bed—the only couple both infected in China's outbreak of the disease.
Diseases, Conditions, Syndromes
May 16, 2013 |
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WHO revises up death toll from SARS-like virus
The World Health Organization on Tuesday revised up the death toll from the SARS-like coronavirus from 18 to 20 worldwide, but said the two additional fatalities in Saudi Arabia were old cases.
Diseases, Conditions, Syndromes
May 14, 2013 |
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Organism
In biology, an organism is any living system (such as animal, plant, fungus, or micro-organism). In at least some form, all organisms are capable of response to stimuli, reproduction, growth and development, and maintenance of homeostasis as a stable whole. An organism may either be unicellular (single-celled) or be composed of, as in humans, many billions of cells grouped into specialized tissues and organs. The term multicellular (many-celled) describes any organism made up of more than one cell.
The terms "organism" (Greek ὀργανισμός - organismos, from Ancient Greek ὄργανον - organon "organ, instrument, tool") first appeared in the English language in 1701 and took on its current definition by 1834 (Oxford English Dictionary).
Scientific classification in biology considers organisms synonymous with life on Earth. Based on cell type, organisms may be divided into the prokaryotic and eukaryotic groups. The prokaryotes represent two separate domains, the Bacteria and Archaea. Eukaryotic organisms, with a membrane-bounded cell nucleus, also contain organelles, namely mitochondria and (in plants) plastids, generally considered to be derived from endosymbiotic bacteria. Fungi, animals and plants are examples of species that are eukaryotes.
More recently a clade, Neomura, has been proposed, which groups together the Archaea and Eukarya. Neomura is thought to have evolved from Bacteria, more specifically from Actinobacteria.
For more information about Organism, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
