Organic Chemistry at Penn State: Reactions. Chemistry Portal. PhysOrg.com - Science News, Technology, Physics, Nanotechnology, Space Science, Earth Science, Medicine.
How twitching frog legs and salt work. Whether it's a bright blue poison dart frog or a brown, warty toad, a frog's survival is all about water.
Most frogs begin their lives as jelly-like eggs that need moisture to develop. The eggs hatch into aquatic tadpoles, which breathe through gills. As the tadpoles grow, they develop lungs and gain the ability to breathe air. Jeremy Jackson: How we wrecked the ocean. Going Green! Ecology. Epic driftwood: Monster tree washes ashore. Scientists Discover The Oldest, Largest Body Of Water In Existence.
Scientists have found the biggest and oldest reservoir of water ever--so large and so old, it’s almost impossible to describe.
Remote Antarctic island is 'richer in biodiversity than the Galapagos' Antarctica's remote South Georgia Island boasts 90 percent of the world's fur seals, half of the world's elephant seals, is navigated by vast populations of blue whales, sperm whales and killer whales, and has beaches that can be packed shoulder-to-shoulder with nesting penguins.
In total, it contains nearly 1,500 recorded species, many of which are found nowhere else on Earth. It's difficult to believe that until recently, this biological treasure was believed to be nothing more than an "inhospitable lump of rock. " In fact, researchers now believe that South Georgia Island contains more species than anywhere else in the Southern Ocean, and may be the most biologically diverse remote island in the world — even more diverse than the storied Galapagos Islands, according to the Independent. Evolution. Evidence. EVOLUTION IN ACTION. The Shape of Life. List of cognitive biases. Systematic patterns of deviation from norm or rationality in judgment Cognitive biases are systematic patterns of deviation from norm and/or rationality in judgment.
They are often studied in psychology, sociology and behavioral economics.[1] Although the reality of most of these biases is confirmed by reproducible research,[2][3] there are often controversies about how to classify these biases or how to explain them.[4] Several theoretical causes are known for some cognitive biases, which provides a classification of biases by their common generative mechanism (such as noisy information-processing[5]). Gerd Gigerenzer has criticized the framing of cognitive biases as errors in judgment, and favors interpreting them as arising from rational deviations from logical thought.[6] Explanations include information-processing rules (i.e., mental shortcuts), called heuristics, that the brain uses to produce decisions or judgments.
Belief, decision-making and behavioral[edit] Social[edit] [edit] Cognitive Bias. Genetically modified food. Genetically modified foods (or GM foods) are foods produced from organisms that have had specific changes introduced into their DNA using the methods of genetic engineering.
These techniques have allowed for the introduction of new crop traits as well as a far greater control over a food's genetic structure than previously afforded by methods such as selective breeding and mutation breeding.[1] Commercial sale of genetically modified foods began in 1994, when Calgene first marketed its Flavr Savr delayed ripening tomato.[2] To date, most genetic modification of foods have primarily focused on cash crops in high demand by farmers such as soybean, corn, canola, and cotton seed oil.
These have been engineered for resistance to pathogens and herbicides and better nutrient profiles. GM livestock have also been experimentally developed, although as of November 2013 none are currently on the market.[3] History Method of production Foods with protein or DNA remaining from GMOs Fruits and vegetables. Biology. The Body's Secret Army. The Control of the Cell Cycle. Home of CELLS alive! Nerve Signaling. Lists of Nobel Prizes and Laureates Nerve Signaling Play the Nerve Signaling Game About About the nerve signaling production. Read More » The Nobel Prize The Nobel Prizes in Physiology or Medicine have rewarded several achievements that helped to reveal the mysterious complexities of the nervous system.
Artificial pancreas gives girl a vacation from diabetes. Juvenile Diabetes Research Foundation funding 13 artificial pancreas trialsIn the future, the device will be the size of a cell phone, attached to a beltAlgorithms determine how much insulin and Glucagon the patient needs Portsmouth, New Hampshire (CNN) -- At 3:30 a.m., Stefany Shaheen awoke to a feeling of uneasiness.
Something was not quite right with her daughter, Elle. Creeping into her bedroom, Shaheen removed a lancet from its wrapper and poked her diabetic daughter's finger. Putting the blood onto the testing strip, she saw the results: dangerously low blood sugar. Shaheen woke Elle up and gave her orange juice to keep her from slipping into unconsciousness. Shaheen was relieved her motherly intuition had told her something was wrong with Elle that night, but she wished she didn't have to rely on it.
Elizabeth Cohen is a senior medical correspondent for CNN. Then last week, Shaheen got her wish. Diabetes and Insulin. VCAC: Cellular Processes: Electron Transport Chain: The Movie. Learn.Genetics™ The PCR Method - a DNA Copying Machine. Lists of Nobel Prizes and Laureates The PCR Method - a DNA Copying Machine Play the Eye of the Donkey Game About the game PCR is a method by which a few fragments of DNA can be duplicated into millions in a couple of hours.
This makes PCR a very useful method in, amongst other fields, forensic science. The Nobel Prize The 1993 Nobel Prize in Chemistry was awarded for the invention of PCR, a method that made it possible to copy a large numbers of DNA fragments in only a few hours. Share this: Share on facebook Share on google_plusone_share Share on twitter More Sharing Services Share on email. Pavlov's Dog. Lists of Nobel Prizes and Laureates Pavlov's Dog Play the Pavlov's Dog Game About the game Conditioned reflexes are reflexes you can learn compared to unconditioned reflexes that are built-in, or natural.
Read More » The Nobel Prize. The New Science of Addiction: Genetics and the Brain.