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Biology - News Gazette
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How a single chemical bond balances cells between life and death

Added: 23.06.2017 12:27 | 0 views | 0 comments

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With SLAC's X-ray laser and synchrotron, scientists measured exactly how much energy goes into keeping a crucial chemical bond from triggering a cell's death spiral.

Source: feeds.sciencedaily.com

'Star dust' wasp is a new extinct species named after David Bowie's alter ego

Added: 23.06.2017 12:27 | 0 views | 0 comments

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During her study on fossil insects at China's Capitol Normal University, a student visited the Smithsonian National Museum of Natural History, USA, carrying two unidentified wasp specimens that were exceptionally well-preserved and 100 million years old. Close examination revealed that both were species new to science. Furthermore, one of them was found to belong to a genus of modern wasps.

Source: feeds.sciencedaily.com

Over 150 Asian Giant Softshell Turtles Return to the Wild

Added: 23.06.2017 12:27 | 0 views | 0 comments

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Biologists have just released 150 Endangered Asian giant softshell turtle (Pelochelys cantorii) hatchlings into their natural habitat along the Mekong River.

Source: feeds.sciencedaily.com

Scientists demonstrate adaptation of animal vision in extreme environments

Added: 23.06.2017 12:27 | 0 views | 0 comments

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Animals can adapt their ability to see even with extreme changes in temperature, researchers have discovered. The researchers looked deeply into the eyes of catfish living in cold-water streams at altitudes of up to nearly 3 km in the Andes Mountains, and found the protein known as rhodopsin that enables vision in dim light also accelerates the speed at which vision occurs as temperatures drop.

Source: feeds.sciencedaily.com

Protein mingling under blue light

Added: 23.06.2017 8:50 | 0 views | 0 comments

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One of the current challenges in biology is to understand rapidly-changing phenomena. Interestingly, only a small fraction of them is due to proteins acting in isolation, the majority of biological events are regulated by proteins acting together in clusters. Researchers have developed a new tool, called "CRY2clust", to trigger protein cluster formation in response to blue light. This new technique has a much faster response rate and higher sensitivity to light than existent methods.

Source: feeds.sciencedaily.com

Biologist develops new method to calculate populations of elusive species

Added: 22.06.2017 22:27 | 0 views | 0 comments

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An innovative new method of estimating the density of snake populations without employing the capture-mark-recapture technique has been created by a biologist.

Source: feeds.sciencedaily.com

How eggs got their shapes

Added: 22.06.2017 14:30 | 0 views | 0 comments

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The evolution of the amniotic egg -- complete with membrane and shell -- was key to vertebrates leaving the oceans and colonizing the land and air but how bird eggs evolved into so many different shapes and sizes has long been a mystery. Now, an international team of scientists took a quantitative approach to that question and found that adaptations for flight may have been critical drivers of egg-shape variation in birds.

Source: feeds.sciencedaily.com

Previously unknown pine marten diversity discovered

Added: 22.06.2017 14:30 | 0 views | 0 comments

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The elusive American pine marten, a little-studied member of the weasel family, might be more diverse than originally thought, according to new research.

Source: feeds.sciencedaily.com

How do genes get new jobs? Wasp venom offers new insights

Added: 22.06.2017 14:30 | 0 views | 0 comments

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A new study describes how four closely related species of parasitic wasps change their venoms rapidly in order to adapt to new hosts, and proposes that co-option of single copy genes may be a common but relatively understudied mechanism of evolution for new gene functions, particularly under conditions of rapid evolutionary change.

Tags: Genes, Jobs, ADATA
Source: feeds.sciencedaily.com

How bacterial organelles assemble

Added: 22.06.2017 14:29 | 0 views | 0 comments

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Scientists are providing the clearest view yet of an intact bacterial microcompartment, revealing at atomic-level resolution the structure and assembly of the organelle's protein shell. This work could benefit research in bioenergy and pathogenesis, and it could lead to new methods of bioengineering bacteria for beneficial purposes.

Source: feeds.sciencedaily.com

Switchable DNA mini-machines store information

Added: 22.06.2017 14:29 | 0 views | 0 comments


Biomedical engineers have built simple machines out of DNA, consisting of arrays whose units switch reversibly between two different shapes. The arrays' inventors say they could be harnessed to make nanotech sensors or amplifiers. Potentially, they could be combined to form logic gates, the parts of a molecular computer.

Tags: SWIFT, Mac, DNA
Source: feeds.sciencedaily.com

UV-sensing protein in brain of marine annelid zooplankton

Added: 22.06.2017 12:20 | 0 views | 0 comments

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Larvae of a marine ragworm Platynereis dumerilii have been studied as a zooplankton model, and possess photoreceptor cells in the brain to regulate circadian swimming behavior. This study revealed that a photoreceptive protein in the brain photoreceptor cells is UV (ultra-violet) sensitive. Since avoidance of UV irradiation is a major cause of a large-scale daily movement of zooplankton, the UV sensor in the brain would be important for physiology and ecology of the zooplankton model.

Tags: Tom Brady
Source: feeds.sciencedaily.com

Cells in fish's spinal discs repair themselves

Added: 22.06.2017 12:20 | 0 views | 0 comments

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A unique repair mechanism has been discovered in the developing backbone of zebrafish that could give insight into why spinal discs of longer-lived organisms like humans degenerate with age. The repair mechanism protects fluid-filled cells of the notochord, the precursor of the spine, from mechanical stress. Notochord cells eventually form the gelatinous center of intervertebral discs, the structures that often degenerate with age to cause back and neck pain.

Source: feeds.sciencedaily.com

Satellite data to map endangered monkey populations on Earth

Added: 22.06.2017 12:19 | 0 views | 0 comments

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Using a combination of satellite and ground data, a research team can map multiple indicators of monkey distribution, including human activity zones as inferred from roads and settlements, direct detections from mosquito-derived iDNA, animal sound recordings, plus detections of other species that are usually found when monkeys are present, such as other large vertebrates.

Tags: Animals, DNA, Money
Source: feeds.sciencedaily.com

How pythons regenerate their organs and other secrets of the snake genome

Added: 22.06.2017 12:19 | 0 views | 0 comments

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Snakes exhibit incredible evolutionary adaptations, including the ability to rapidly regenerate their organs and produce venom. Scientists studied these adaptations using genetic sequencing and advanced computing. Supercomputers helped the team identify a number of genes associated with organ growth in Burmese pythons, study secondary contact in related rattlesnake species, and develop tools to recognize evolutionary changes caused by natural selection.

Source: feeds.sciencedaily.com

Dogs to sniff out chemicals that identify human remains

Added: 22.06.2017 8:28 | 0 views | 0 comments

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New research to help improve accuracy of criminal investigations involves a partnership between humans and their canine coworkers.

Source: feeds.sciencedaily.com

Pathogen that causes sleeping sickness: Promising new target

Added: 22.06.2017 8:27 | 0 views | 0 comments

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The life-threatening African trypanosomiasis, also called sleeping sickness, is caused by protozoa of the species Trypanosoma brucei. A team of researchers has studied the pathogens and reported exciting news: The trypanosomes have a so far unknown enzyme which does not exist in humans and other vertebrates. This makes it a promising target for therapy.

Source: feeds.sciencedaily.com

Pollinator extinctions alter structure of ecological networks

Added: 21.06.2017 19:00 | 0 views | 0 comments

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The absence of a single dominant bumblebee species from an ecosystem disrupts foraging patterns among a broad range of remaining pollinators in the system -- from other bees to butterflies, beetles and more, field experiments show.

Tags: Networks, NATO
Source: feeds.sciencedaily.com

Algae: The final frontier

Added: 21.06.2017 16:59 | 0 views | 0 comments

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Algae dominate the oceans that cover nearly three-quarters of our planet, and produce half of the oxygen that we breathe. And yet fewer than 10 percent of the algae have been formally described in the scientific literature, as noted in a new review.

Tags: Planes
Source: feeds.sciencedaily.com

Fossil holds new insights into how fish evolved onto land

Added: 21.06.2017 16:59 | 0 views | 0 comments

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The fossil of an early snake-like animal -- called Lethiscus stocki -- has kept its evolutionary secrets for the last 340-million years. Now, an international team of researchers has revealed new insights into the ancient Scottish fossil that dramatically challenge our understanding of the early evolution of tetrapods, or four-limbed animals with backbones.

Source: feeds.sciencedaily.com

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