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Tag: "sense" at biology news

Salmonella bacteria use RNA to assess and adjust magnesium levels

...witch. The Salmonella riboswitch is the first to sense and respond to a metal ion, substantially expandin...ironment. First identified in 2002, riboswitches sense when a protein is needed and stop the creation of the protein if it isn't. That in itself isn't rema...

Newly discovered killer cell fights cancer

...nvironmental pathogens. "Here, IKDCs are ready to sense invaders and spring into action," says Housseau. Then, the group tracked the cells to the main messenger center of the immune system - the lymph nodes. Here, they found approximately 35 percent of the original group of IKDCs now secreting communica...

Teens unaware of sexually transmitted diseases until they catch one, Carnegie Mellon study finds

...r diseases, and so they may come away with a false sense of confidence," she said. The study's findings are troubling because teenagers who know little about STDs are more likely to engage in risky sexual behavior and to delay the treatment of STDs. And the consequences are severe. Genital herpes, for exa...

Are dancers genetically different than the rest of us? Yes, says Hebrew University researcher

...xpressed as strongly in other people: a heightened sense of communication, often of a symbolic and ceremonial nature, and a strong spiritual personality trait. Others involved in the research with Ebstein were his Ph.D. student Rachel Bachner- Melman, as well as additional researchers from Israel and Fra...

Confidence in memory performance helps older adults remember

...ink between actual cognitive functioning and a low sense of control, and examines whether the relationship ...strategies influences memory performance. "One's sense of control is both a precursor and a consequence of age-related losses in memory," says lead author ...

Yale researchers find environmental toxins disruptive to hearing in mammals

...w that chloride ions are crucial for our exquisite sense of hearing," said Joseph Santos-Sacchi, professor in the Departments of Surgery and Neurobiology and first author of the study in the Journal of Neuroscience."These data also indicate that the hearing in marine and other mammals could be affected by ...

UF scientists trace origin of shark's electric sense

... mean they can only detect electric fish. They can sense electricity generated by a muscle twitch, even if ...f the lateral line that allows fishto mechanically sense their environment, and organs of the inner ear that enable people to keep their balance. But scienti...

Novel method reveals how menthol discovery could point towards new or improved pain therapies

...other drugs and proteins. "Because our ability to sense temperature is closely linked to our ability to sense pain, it is not surprising that the misregulation of temperature-activated ion channels can result i...

Lizard 'third eye' sheds light on evolution of color vision

...'s forehead, use two types of molecular signals to sense light: those found only in simpler animals, like scallops, and those found only in more complex animals like humans. Although the blue-green color comparison method used by the parietal eye is not one shared by humans, it does reveal one potential ...

New mechanism for essential genome-wide gene silencing identified

... hand, is involved in gene repression, so it makes sense that it might exist in an either/or relationship with acetylation or ubiquitylation." Another observation made during the study was that slightly higher levels of sumoylation occur near the tips of the chromosomes, the telomeres, which are known to ...

Cracking the genetic code for control of gene expression

...code by which DNA encodes amino acids, we can make sense of the constantly increasing amout of DNA sequence data as far as it encodes proteins. This code was solved in 1966 and it has allowed researchers to find new genes and estimate the total number of genes in the human genome. However, coding sequence ...

Deep-rooted plants have much greater impact on climate than experts thought

...ht of the plant above ground. Such deep roots make sense if their purpose is to redistribute water during the dry season for use by the plant's shallow roots, though Dawson suspects that the real reason for keeping the surface soil moist is to make it easier for the plant to take in nutrients. "Hydraulic ...

UF researchers develop ways to keep the bloom on the rose

...gift to receive, that they consistently increase a sense of individual well-being, and are even capable of increasing creative thought and output in workplace settings," Nell said. "If we can help make floral products last longer, their value to consumers will be greater." He expects that with improvemen...

Neuroscientists discover new cell type that may help brain maintain memories of smells

...l type in the part of the brain that processes our sense of smell. This new cell type, the Blanes cell, is ...rst relates to the possible connection between the sense of smell and Alzheimer's disease. The Case investigators found that the same biological machinery t...

Rare Chinese frogs communicate by means of ultrasonic sound

...ent from our own," Feng said. "The electromagnetic sense in fishes and homing pigeons, polarized light vision in ants, chemical sensing of pheromones in insects and rodents, echolocation by ultrasound in bats and dolphins, are just a few examples. "That frogs can communicate with ultrasound adds to that l...

Alternatives to the use of nitrate as a fertiliser

...exclusively ammoniacal fertilisers. Stress in this sense is understood as the processes that produce a decrease in plant growth and thereby the productivity of crops. A thorough knowledge of these questions enables a more rational use of fertilisers in farming. Research for sustainable farming The poss...

Watching the brain switch off 'self'

Everybody has experienced a sense of "losing oneself" in an activity--whether a movi...mindless,' selfless mental state to achieve a true sense of reality," they wrote. ...

Less is more, gene study shows

...us functions, they found that genes related to the sense of smell and the ability to taste bitterness were ...cerned with the immune response. The findings made sense to Zhang. "We know that humans have reduced olfactory sensitivity, so the finding is consistent wit...

Protein 'nanosprings' most resilient found in nature

... understanding of how organisms, including humans, sense and respond to physical forces at the cellular level, the researchers said. The nanometer-sized springs are also ideal candidates for building biologically-inspired springy nanostructures and nanomaterials with an inherent ability to self-repair, the...

'Nano-keys' bind cell receptors and trigger allergic reactions

...eins on mast cells to form receptor complexes that sense the environment and sensitize the cell to allergen... caused by receptor clustering that allow cells to sense their outer environment and start cellular processes within the cell. The so-called nano-keys are s...

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