away 2 5

Tag: "away" at biology news

Too mellow for our predatory world

...proaching up to the point where the reptiles moved away and fled a short distance. At the end of the experiment, the scientists captured the animals and collected blood samples in order to determine CORT levels. When animals interpreted the situation as threatening, the concentration of corticosteroid hor...

History-hunting geneticists can still follow familiar trail

As the world's first explorers branched away from humanity's birthplace in east Africa some 65,000 years ago, distinct mutations accumulated in the DNA of each population, essentially providing a genetic trail for modern researchers to follow. Recently some scientists have raised doubts about ...

Emotional control circuit of brain's fear response discovered

...m to prioritize and refine responses –we don't run away from every loud sound or unexpected sight," said Dr. Hirsch. "Following the discovery of the amygdala's role in fear response, we decided to explore the finer points of the neurocircuitry of fear ?how it is regulated/controlled in the brain." To a...

NASA study: Alaskan fires affected Houston air quality in 2004

...h as doubled ground-level ozone thousands of miles away in Houston during a two-day period in July 2004. The study, which will appear online Sept. 26 in the Journal of Geophysical Research, offers scientists a rare glimpse at the precise air-quality effects from pollutants generated thousands of miles awa...

Researchers reveal mystery of bacterial magnetism

...quickly. "But by observing how the bacteria moved away from oxygen that we added to their environment," r...oxygen when in a magnetic field, so that they swim away from oxygen at much lower concentrations." It is as if the climber gets tired and turns around soon...

Singing for survival

...ved the singing behaviour of gibbons spending time away from their home group. They noted that during predator songs within the group setting, the absent individual responded with his own song, before reappearing to join the group again. Because gibbons are unusually monogamous, it is thought that sex...

Mayo Clinic study suggests that a central nervous system viral infection can lead to memory deficits

... throughout the lifetime of an individual may chip away at the cognitive reserve, increasing the likelihood of detectable cognitive impairment as the individual ages. We hypothesize that mild memory and cognitive impairments of unknown etiology may, in fact, be due to accumulative loss of hippocampus func...

UNC scientists solve mystery of how largest cellular motor protein powers movement

... energy is initially released from ATP is very far away from where the mechanical force occurs. The mechanical force must be transmitted over a large distance.? The study was published online Nov. 22 in the Proceedings of the National Academy of Sciences Early Edition. The work was supported in part by g...

Study offers window into human behavior, brain disease

...end, with only a few dendritic processes extending away from them ?were localized in only two regions of the frontal lobes. The cells received only limited attention in the ensuing years, but in the meantime scientists determined that the brain regions in which von Economo neurons arise -- the anterior ...

Honey bee genome holds clues to social behavior

...be switched on. If the transcription factor breaks away from the binding site, the gene is switched off. To search for genes that might play a role in social behavior, Sinha and his colleagues used the newly sequenced honey bee genome to scan the binding sites of transcription factors known to function ...

New evidence of early horse domestication

...e from thongs of horse hide, and would have rotted away long ago. Likewise horses themselves have not changed much physically as a result of domestication, unlike dogs or cattle. So ancient horse bones don't easily reveal the secrets of domestication. With research funding from the National Science Foun...

Study suggests evolutionary link between diet, brain size in orangutans

...s as often as they can, and they'll travel farther away for them if not nearby," Taylor said. Sumatra also appears to be less subject to periodic "El Niño" climatic fluctuations that disrupt vegetative growth on other islands in the Indonesian region, the researchers' report said. The scientists found...

Ocean temperature predicts spread of marine species

... larval phase is the only chance for babies to get away from parents. Dispersal prevents inbreeding; for some species, this is a time to move from breeding ground to habitat where they'll mature," she said. But less than 1 percent of larvae survive dispersal. They are consumed by predators, encounter h...

'Mindless autopilot' drives people to underestimate food decisions

...ough dish. Always sit at least an arm's length away from a buffet table or snack bowl. ...

What animals can tell us about hemorrhage, organ transplants and aging

... that literally freeze during the winter, then hop away in the spring as though nothing unusual occurred Comparative physiologists study all kinds of animals -- bears, frogs, snakes, squirrels, seals, oysters and a host of other animals to answer the question "How do they do that?" They uncover genera...

New finding points way to foiling anthrax's tricks

...- bacillibactin and petrobactin - that snatch iron away from the human body's iron transporter molecules, called transferrin. These scavengers, or "siderophores," are essential to anthrax's ability to grow rapidly, especially after the spores are inhaled, though why the bacteria need two siderophores to d...

Bacterial 'switch gene' regulates how oceans emit sulfur into atmosphere

...re the primary plankton involved in directing DMSP away from forming DMS, and thus making sulfur unavailable to atmospheric processes. Dramatic advances in understanding how these plankton work have developed in the past few years with the availability of new genomic data. The scientists searched genome...

Researchers find that bumblebees' flower choice matters

...the case, purple loosestrife is luring pollinators away from the native plants. To investigate her hunch further, Flanagan added a third wetland species to the garden ?a native plant known as "great blue lobelia." So far, the bees continue their strong attraction to purple loosestrife. "This preferen...

The secret lives of sea slugs

...l them (un-sluggishly) end over end downstream and away from harm, as well as crawling aggressively (for slugs) upstream to breed and feed. The observations also correlated with earlier studies suggesting that sea slugs flatten out their bodies to reduce drag when they encounter strong water currents, a b...

Researchers discover how bacteria sense their environments

... spin. This allows the bacterium to move toward or away from what it has sensed. Such a mechanism of amplification allows signals from the receptors to travel hundreds of angstroms, a distance used in atomic physics that is a virtual marathon in the world of intracellular communication. Ten angstroms eq...

1 2 3 4 5 6 7 8 9 10