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Tag: "store" at biology news

How nerve cells stay in shape

Nerve cells store and transmit information via special contact sites...es can, depending on input, change and in this way store new memory. A synapse has two parts: one originates from the axon of the sending cell, the other, f...

Amazon rainforest greens up in the dry season

...with higher gross primary productivity take up and store more carbon in the form of carbon dioxide, a major greenhouse gas. "We can look at this increase in greenness as a measure of Amazon health, because in the disturbed areas we don't see the greenness increase during the dry season," Huete said. " A l...

Mechanism for memory revealed in neurons of electric fish

... fish zap each other in dark waters, their neurons store a memory of the sizzling communiqué by turning on special cell membrane channels. The channels give the fish neurons the ability to retain a memory long after its original stimulus is gone. "There is short-term stimulation that results in long-ter...

'Accelerated evolution' converts RNA enzyme to DNA enzyme in vitro

...ns. Nucleic acids are large complex molecules that store and convey genetic information, but can also function as enzymes. While the transfer of sequence information between two different classes of nucleic acid-like molecules-between RNA and DNA, for example-is straightforward because it relies on the on...

Of mice, men, trees and the global carbon cycle

...h the process of photosynthesis, plants absorb and store more carbon dioxide than they emit through respiration. But global plant respiration is a huge variable that must be taken into account. "If we estimate the nitrogen content of plants, we can model their metabolic rates, helping us to better asses...

You will remember this

...can actually get into the 'right frame of mind' to store new information and that we perform at our best if...scientists knew that brain activity changes as you store things into memory but now we have found brain activity that tells how well your memory will work in...

Twin molecular scissors link creation of microRNAs with gene-silencing

..., or adenosine triphosphate, is a molecule used to store and release energy for tasks throughout the body. "The work of RISC is being accomplished with no energy requirement whatsoever," Shiekhattar says. "All of the activity ?the separation of the strands, the multiple cutting steps, everything ?is being...

'Sharp' older brains are not the same as younger brains

...rst solid evidence that still "sharp" older brains store and encode memories differently than younger brain...the basic machinery that neurons use to encode and store information in the brain," said Gallagher, who collaborated with Alfredo Kirkwood and Sun Seek Min o...

Team led by Carnegie Mellon University scientist finds first evidence of a living memory trace

...ould develop a memory of that odor and temporarily store it as "working memory." They also found that honeybees lost their working memory of a re-enforced odor if they were cooled down and then revived, suggesting that the memory wasn't permanently stored. This latest study is the first to combine fluor...

Scientists map one of biology's critical light-sensing structures

... Intriguingly, the phytochrome has the ability to store the light it has detected, initiating a response days after it is sensed, Vierstra says. "This memory allows the plant to predict where the light will come from each day and measure the length of daylight so that they flower in the correct season." B...

Storing carbon to combat global warming may cause other environmental problems, study suggests

... wrong question. "The question isn't just 'Can we store carbon in trees and how much do we gain from that?... increased nutrient demands as well." In order to store carbon from carbon dioxide in their tissues, trees must also remove nutrients like calcium and potas...

Give thanks for the cranberry, say dental researchers

...nk about running to the juice aisle in the grocery store to prevent tooth decay, Koo said. The sugar that is usually added to cranberry juice can cause cavities, and the natural acidity of the substance may contribute directly to tooth decay. Instead of advocating mass consumption of cranberry juice, Koo ...

Seeing the forest and the trees

...ing the Earth's natural mechanisms that absorb and store carbon. A new study released this week in the on-line edition of the journal Science suggests that tree diversity in tropical forests plays a crucial role in determining how much carbon these natural storehouses are able to hold, as well as their abi...

New antifreeze protein found in fleas may allow longer storage of transplant organs

...n Protein Engineering. "This means that if used to store organs for transplants, they will be cleared from a person's system very quickly, reducing the possibility of harmful antibodies forming." An ancient species related to modern insects, snow fleas are also known as "springtails" because of the distin...

Living anti-HIV gel shows early promise

...t that modified bacteria would be easy to produce, store and distribute. But they add that before human trials can begin, researchers will need to ensure that the microbes are better able to colonise the reproductive and intestinal tracts. Other issues that will need to be addressed include the safety of...

How 'Dirt' Could Educate The Immune System And Help Treat Asthma

...bana-Champaign indicates that the best location to store carbon dioxide in the deep ocean will change with ... change has a big impact on the oceans' ability to store carbon dioxide. The effect was most pronounced in the Atlantic Ocean. The researchers presented thei...

Climate change will affect carbon sequestration in oceans, model shows

...bana-Champaign indicates that the best location to store carbon dioxide in the deep ocean will change with ... change has a big impact on the oceans' ability to store carbon dioxide. The effect was most pronounced in the Atlantic Ocean. The researchers presented thei...

Bronx Zoo bears are new Samsonite gorillas

...ne--as the most effective means for backpackers to store their food and garbage. By providing canisters to outdoor retailers for rental to campers, holding group training sessions, and providing educational materials, WCS and its regional partners have reduced the conflicts between humans and bears in the ...

U-M scientists discover identifying markers for primitive blood-forming stem cells

... discovered the biological equivalent of a grocery store bar code on the surface of primitive, blood-forming stem cells in mice. Called hematopoietic stem cells, they give rise to all the different types of specialized cells found in blood. By reading the bar code, scientists can separate stem cells from ...

Green diesel: New process makes liquid transportation fuel from plants

...unlike the way our own bodies use carbohydrates to store energy." About 75 percent of the dry weight of herbaceous and woody biomass is comprised of carbohydrates. Because the UW-Madison process works with a range of carbohydrates, a wide range of plants, and more parts of the plant, can be consumed to ma...

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