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Tag: "learned" at biology news

Growth in the sea comes down to a struggle for iron

... as the gold in Fort Knox. Bacteria and fungi have learned to scavenge some of this iron by building a trap. They create molecules called siderophores that are able to lock up iron. And in many cases, only the organism that built the molecule in the first place has the key to unlock it, says Wells. "It's ba...

Plants, animals share molecular growth mechanisms

...ng altered growth. The researchers previously had learned that a large protein complex, known as WAVE, activated ARP2/3, but they didn't know specifically which WAVE protein was the actual switch. Their latest research showed that a WAVE protein they've dubbed DISTORTED3 (DIS3) turns on APR 2/3, which in tu...

Researchers Uncover Key Step In Manufacture of Memory Protein

...eficits. She explained that other researchers have learned that some human beings lack normal CPE due to mutations in the CPE gene. Future research may determine if the CPE mutation affects these individuals?long-term memory. ...

Scientists seek answers on what activates deadly anthrax spores

...ornia, San Diego. The research stems from lessons learned from studying the bacteria that cause Staphylococcus infections and two other bacteria in the same group as anthrax. Claiborne said the group proposes that a vitamin B5 derivative known as Coenzyme A plays a crucial role in the germination of the an...

Sea skate experiment sheds light on human cell transport

...eath. So how do skates do it? Goldstein and Musch learned how cellular channels, or gates, spring into action when skate red blood cells become engorged with water. Vesicles, or tiny fluid-filled sacs, carry these gates up to the cell membrane. The vesicles are inserted into the membrane and a chemical proc...

Poplar trees redirect resources in response to simulated attack

... 2005), both now available online. "Just as we've learned to use radiotracers to image the inner workings of the living human brain, we can now track biochemical and physiological processes within plants using these powerful imaging tools," said Richard Ferrieri, who leads Brookhaven's role in the research....

Weill Cornell Research Reveals Secrets Of Trafficking Within Cells

... "From our previous work in brain synapses, we've learned that endocytosis is a machine that really runs quite fast, and in this latest study we were trying to figure out what those speed limits are, especially with regard to varying amounts of clathrin," Dr. Ryan explained. However, they faced one methodo...

New Study from Affymetrix Laboratories Points to Changing View of How Genome Works

...n? It seems certain that this is not the genome we learned about while in school." In the "traditional" view of the human genome, there are about 26,000 genes used to make proteins that ultimately control the structure and function of every cell in the body. Most disease research has focused on studying the...

New SARS Protein Linked To Important Cell Doorway

...hat the virus does produce the orf7a protein. "We learned that the virus does make the protein, but we also got a big surprise when we looked at where the protein was," says Diamond. "Based on our analysis of the genome, we thought the orf7a protein would be on the surface of infected cells, decoying the im...

Nano-Probes Allow an Inside Look at Cell Nuclei

...ear membrane is very difficult," says Chen. "So we learned from the virus." So far, Chen and Gerion have been able to introduce and retain quantum dots in the nuclei of living cells for up to a week without harming the cell. In addition, quantum dots fluoresce for days at a resolution high enough to detect ...

FDA Warns Consumers Not to Use Home-Use Diagnostic Kits Marketed by Globus Media

... Style HCG Urine (Home) * Pregnancy Test FDA learned of the problem from two consumer complaints. FDA has not approved or evaluated the performance of any of Globus Media's products. As a result, consumers cannot know with any degree of certainty that test results are correct. For example, a person te...

Plants defy Mendel's inheritance laws, may prompt textbook changes

...molecular geneticist. "While Mendel's laws that we learned in high school still are fundamentally correct, they're not absolute. "If the inheritance mechanism we found in the research plant Arabidopsis exists in animals, too, it's possible that it will be an avenue for gene therapy to treat or cure diseases...

Bird Brains Show How Trial and Error May Contribute to Learning

...dult male zebra finch knows only one scratchy tune learned in its youth, which it performs repeatedly and intensely when females are listening. But occasionally, the finch might improvise, experimenting with a slower, more sultry variation or emphasizing different notes. Neurobiologists studying the finch n...

Falling ants glide back to trunk to avoid dangers of forest floor

An amazing variety of arboreal animals have learned to glide through the forest, from flying squirrels to flying lizards and frogs, and even ?frightening as it sounds ?snakes. Now, add ants to that list, say biologists at the University of California, Berkeley, and the University of Texas Medical Bra...

Rats infected as newborns grew up vulnerable to memory problems during an immune challenge

...ords, under immune stress, the early-infected rats learned to fear the place where they'd been shocked significantly less often than rats who had not been infected as pups. They simply didn't remember it was dangerous. In a second experiment, the researchers injected 32 different neonatally infected and con...

Robot-based system developed at Carnegie Mellon detects life in Chile's Atacama desert

...d new robot, was developed in response to what was learned in 2003. In the final year of the project, plans call for Zoë, equipped with a full array of scientific instruments, to operate autonomously as it travels 50 kilometers over a two-month period. The science team, led by Cabrol, is made up of geologis...

Microbial forensics: The next great forensic challenge

...ial forensic capability. At the same time, lessons learned from the traditional forensic community for comprehensive quality assurance guidelines should be adapted to build a base of acceptance, credibility. and reliability for addressing this next grand forensic challenge." Murch will present the paper, "B...

Birds brains reveal source of songs

...ngs. Deactivating the AFP after a bird had already learned the correct song had no affect on its continued proficiency. The researchers then learned that the AFP neurons produce random bursts of activity coinciding with new variations in the practic...

To control germs, scientists deploy tiny agents provocateurs

...histicated ways," says Blackwell. Scientists have learned that bacteria sense each other and the overall density of their colony by continuously exchanging small molecules and peptides - a process known as quorum sensing. Past a certain density threshold, the colonies unite to initiate group behaviors, such...

Revolutionary nanotechnology illuminates brain cells at work

...olved with emotional reactions, and it helps store learned information in memory. When neurons are activated, they secrete glutamate, and we could see this activity under the microscope by watching the color change. We stimulated the neurons and watched them secrete glutamate in response. We also saw the rem...

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