News tagged with organisms
Boosting 'cellular garbage disposal' can delay the aging process, research shows
(Medical Xpress)—UCLA life scientists have identified a gene previously implicated in Parkinson's disease that can delay the onset of aging and extend the healthy life span of fruit flies. The research, ...
Genetics
May 06, 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 |
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Growing new arteries, bypassing blocked ones
Scientific collaborators from Yale School of Medicine and University College London (UCL) have uncovered the molecular pathway by which new arteries may form after heart attacks, strokes and other acute illnesses bypassing ...
Medical research
Apr 29, 2013 |
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The biology of fats in the body
When you have your cholesterol checked, the doctor typically gives you levels of three fats found in the blood: LDL, HDL and triglycerides. But did you know your body contains thousands of other types of fats, or lipids?
Medical research
Apr 29, 2013 |
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Social stress and the inflamed brain
Depression is the leading cause of disability with more than 350 million people globally affected by this disease. In addition to debilitating consequences on mental health, depression predisposes an individual to physiological ...
Psychology & Psychiatry
Apr 21, 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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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 |
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WHO says China bird flu not spreading easily in humans
There's no evidence a new bird flu strain is spreading easily among people in China even though some of those sickened were close to patients with the virus, the World Health Organization said Friday.
Diseases, Conditions, Syndromes
Apr 19, 2013 |
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Grape intake may protect against metabolic syndrome-related organ damage
Consuming grapes may help protect against organ damage associated with the progression of metabolic syndrome, according to research presented Monday at the Experimental Biology conference in Boston. Natural components found ...
Health
Apr 22, 2013 |
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H7N9 flu 'one of most lethal' says WHO as spreads to Taiwan (Update)
International experts probing China's deadly H7N9 bird flu virus said Wednesday it was "one of the most lethal influenza viruses" seen so far as Taiwan reported the first case outside the mainland.
Diseases, Conditions, Syndromes
Apr 24, 2013 |
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Scientists identify important regulator for synapse stability and plasticity
(Medical Xpress)—Using the fruit fly as a model organism, neurobiologists from the Friedrich Miescher Institute for Biomedical Research have identified the L1-type CAM neuroglian as an important regulator ...
Neuroscience
Apr 25, 2013 |
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H7N9 bird flu spreads to southern China
China's deadly outbreak of H7N9 bird flu has spread to a province in the country's south, the government said Friday, marking the second announcement in two days of a case in a new location.
Diseases, Conditions, Syndromes
Apr 26, 2013 |
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Why climate change is causing upset stomachs in Europe
Much has been said about the effect of climate change, but little is known about its impact of water-related health issues. Scientists are now suggesting that greater quantities of rainfall and bigger storms ...
Health
Apr 30, 2013 |
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China reports 27th death from H7N9 bird flu (Update)
The death toll from the H7N9 bird flu virus has risen to 27, state media said Thursday after a man died in central China's Hunan Province.
Diseases, Conditions, Syndromes
May 02, 2013 |
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Basic disinfectant could halt bird flu spread, study shows
Live poultry markets can act as hotbeds for H5N1 bird flu, but simple measures such as disinfecting trucks, equipment and market space could help stop the virus from spreading, researchers said Monday.
Diseases, Conditions, Syndromes
May 06, 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.
