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Tag: "sense" at biology news

Quick -- what’s that smell?

...y receptors, while animals with a highly developed sense of smell - such as dog, rat, or cat - may have over a thousand different receptor types. It is thought that perception of any one odorant probably involves simultaneous stimulation of several different receptors and that an olfactory code enables ide...

Predators prefer to hunt small-brained prey

... these findings are put into perspective, it makes sense that being clever should help individuals avoid or escape danger ?the larger-brained chimpanzees rarely feature in the diets of predators." "Some animals' ability to avoid being eaten by predators may be a contributing factor to the evolution of l...

Compound in dairy products targets diabetes

...ly of proteins, and their biological purpose is to sense fatty acids and fatty acid metabolites within the cell, says Vanden Heuvel. When the synthetic drugs interact with these protein receptors, it turns the receptor "on," making it an active form of the protein, which then interacts with DNA and reg...

Scientists solve sour taste proteins

...so could lead to a better understanding of how the sense of taste functions neurologically, he said."We still do not know what is happening in the brain -- that is, exactly how the brain would interpret the signals coming from the tongue to tell the difference between lemons and lemonade," Matsunami said. ...

Stimulation of the semicircular canals can artificially control human walking and balance

... Press. To investigate how the body's ability to sense head movements can contribute to balance control a...t the key to human balance has come from a precise sense of--and ability to align the body to--the direction of gravity. However, the semicircular canals t...

Surprise finding for stretched DNA

...tched, its double helix starts to unwind. As much sense as this makes from an intuitive standpoint, a recent experiment proved it not to be the case. Researchers with the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California at Berkeley used a ...

Molecular DNA switch found to be the same for all life

...tween the DNA initiators in all three domains make sense because, to paraphrase Francois Jacob, the one thing a cell wants to do is to become two cells. A cell can't do this if it doesn't replicate its DNA in the right place, at the right time, and in the right manner, while simultaneously avoiding over-r...

FSU biologists uncover mechanisms that shape cells for better or worse

...d, or polarized, to interpret information from the sense organs, and intestinal cells are polarized to take up nutrients and move them into the bloodstream," he said. Poulton explained that in order to ensure cell polarity in the Drosophila oocyte, the cells surrounding it activate a classic signaling pa...

NASA technology helping injured US troops

...us amounts of their own weight whether they have a sense of balance or not. "It allows them to stand without having three or four therapists helping them," explained Messier. "So it gets the patient up sooner in the rehabilitation process without a fear of falling and without injuries to the patient or sta...

Sandia work launched on space shuttle shows live cells influence growth of nanostructures

... from long-lived cells that require no upkeep, yet sense and then communicate effectively with each other a...by implants and catheters. The cell's ability to sense and respond to its environment is what forms these unique nanostructures, says Brinker. During spin-...

MIT sheds light on how tumor cells form

... reason these checkpoint proteins may be unable to sense the defective cells, which tend to have very subtl...d. In other words, the checkpoint proteins need to sense that the APC and EB1 proteins both are present for normal cell division to take place. "This is imp...

Adult stem cells are touchy-feely, need environmental clues

...ns or muscle or bone. " Mesenchymal stem cells sense their environment through the force it takes them to push against surrounding objects. Each cell has its own skeleton and molecular motors that it uses as muscles. According to the researchers, the amount of force the stem cell needs to move its ce...

Everything in its place: Researchers identify brain cells used to categorize images

...aning and makes it possible for us to quickly make sense of our surroundings. In these experiments, monkeys were taught to play a simple computer game in which they grouped members of a set of visual motion patterns into one of two categories. Freedman and senior author John Assad, PhD, HMS associate prof...

Study finds how organs monitor themselves during early development

...t. Instead, they found that the ovary has a way to sense its lack of germ cells and steps up production. "Within three days, the ovary catches up; it then has enough germ cells," says Dr. Gilboa. "I had not a shred of a clue how this is accomplished, so I set out to understand how the ovary does this." ...

New MRI technique quickly builds 3-D images of knees

...spectives, you'd have a much better chance to make sense of the pain you're feeling, your doctor's diagnosis and your treatment options," he says. The technique, which Block patented through the Wisconsin Alumni Research Foundation, also will make it easier to image parts of the body, such as the heart o...

Chocolate, wine, spicy foods may be OK for heartburn, Stanford study finds

...is going to take the heartburn away, it makes more sense just to take the medicine," she added. That said, Gerson allowed that for some patients, a minor change in diet can make sense. "If a patient comes in and states, 'Red wine really gives me terrible heartburn,' then it may be reasonable to say, 'Well...

Attacking cancer's sweet tooth is effective strategy against tumors

...Achilles heel in cancer cells. It also adds to our sense of opportunity for new avenues of cancer therapeutics," said Stuart Schrieber, Morris Loeb professor and chair of the Department of Chemistry and Chemical Biology at Harvard University. As a tumor grows, cells crowd one another and may be cut off f...

Researchers find molecular 'brake' to cell death

.... The researchers say this kind of strategy makes sense for the cell, because it acts like a biological fail-safe system to protect against the errant release of CC from malfunctioning mitochondria. A large pool of free nucleotides along with complete ATP molecules normally exists in a healthy cell so tha...

Thinner and younger

...vels of inflammation than lean people, so it makes sense that losing weight might increase average lifespan by lowering the risks of some age-related diseases, such as diabetes and atherosclerosis. But in animal studies not only did more of the animals live longer, the maximum length of a rat's or mouse's ...

Convergent evolution of molecules in electric fish

...dified muscles, to communicate with each other and sense their environment. The researchers found that electric fishes expressed one of the sodium channel genes in their electric organs only, while non-electric fish express both genes in their muscles. "Most fish have both genes in the muscle, but as t...

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