Living at higher altitudes in India is linked to an increased risk of stunted growth, with children living in homes 2,000 meters or more above sea level 40% more at risk than those living 1,000 meters below, finds research ...
4 hours ago
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Child maltreatment is a serious public health issue in the United States, particularly affecting young children who are most vulnerable due to their dependence on caregivers. Infants under two years old account for over one-quarter, ...
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Three more African countries have joined a rollout of malaria vaccines targeting millions of children in a continent that accounts for 95 percent of malaria deaths, the UN said Thursday.
9 hours ago
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Physical activity in natural environments prevent almost 13,000 cases of non-communicable diseases a year in England and save treatment costs of more than £100m, new research from the University of Exeter has found.
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A South Korean team has spearheaded a research endeavor that successfully uncovered the mechanisms governing inflammation and metabolic dysfunction in tissues associated with obesity. Their findings were published in Nature ...
13 hours ago
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Diagnosing rare Mendelian disorders is a labor-intensive task, even for experienced geneticists. Investigators at Baylor College of Medicine are trying to make the process more efficient using artificial intelligence. The ...
13 hours ago
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When a small number of cases of locally transmitted malaria were found in the United States last year, it was a reminder that climate change is reviving or migrating the threat of some diseases. But across the African continent ...
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The widespread use of alcohol and e-cigarettes among adolescents is "alarming", according to a report released on Thursday by the World Health Organization's (WHO) European branch, which recommended measures to limit access.
19 hours ago
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The World Health Organization (WHO) called Wednesday for a strengthening of global detection networks for the H5N1 bird flu virus which infected a large number of animal species.
Apr 24, 2024
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As the proliferation of misinformation continues to pose a significant challenge on social media platforms, a beacon of hope emerges in research from the University of California San Diego.
Apr 24, 2024
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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.
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