Chemical reaction
hideA chemical reaction is a process that always results in the interconversion of chemical substances. The substance or substances initially involved in a chemical reaction are called reactants. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking of chemical bonds, although the general concept of a chemical reaction, in particular the notion of a chemical equation, is applicable to transformations of elementary particles, as well as nuclear reactions. Different chemical reactions are used in combination in chemical synthesis in order to get a desired product. In biochemistry, series of chemical reactions catalyzed by enzymes form metabolic pathways, by which syntheses and decompositions ordinarily impossible in conditions within a cell are performed.
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News tagged with chemical
Highlight: Chloride increases response to pheromones and odors in mouse sensory neurons
Medicine & Health / Neuroscience
23 hours ago |
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The vomeronasal organ (VNO) is an odor detection system that mediates many pheromone-sensitive behaviors. Vomeronasal sensory neurons (VSNs), located in the VNO, are the initial site of interaction with odors and pheromones. ...
Titan's lakes could be explored by boat
Space & Earth / Space Exploration
Dec 22, 2009 |
4.6 / 5 (10) |
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(PhysOrg.com) -- If a suggestion to be made to NASA comes to fruition, vast lakes thought to be filled with liquid hydrocarbons near the north pole of Saturn's moon Titan, may one day be explored by boat.
Nut Roasting Benefits: Antioxidant levels of nuts increases after roasting
Dec 22, 2009 |
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The chemical reaction that darkens a batch of roasting peanuts also boosts the amount of antioxidants they contain, according to a new study in the journal Food Chemistry.
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Better airport scanners delayed by privacy fears
13 hours ago |
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(AP) -- High-tech security scanners that might have prevented the Christmas Day attempt to blow up a jetliner have been installed in only a small number of airports around the world, in large part because ...
Small molecules found to protect cells in multiple models of Parkinson's disease
16 hours ago |
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Several structurally similar small molecules appear capable of protecting cells from alpha-synuclein toxicity in multiple models of Parkinson's disease, according to Whitehead Institute researchers. Misfolded copies of the ...
Research gives new perspective on periodic table
17 hours ago |
4.8 / 5 (31) |
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Transforming lead into gold is an impossible feat, but a similar type of "alchemy" is not only possible, but cost-effective too. Three Penn State researchers have shown that certain combinations of elemental ...
New RNA interference technique can silence up to five genes
17 hours ago |
5 / 5 (2) |
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Researchers at MIT and Alnylam Pharmaceuticals report this week that they have successfully used RNA interference to turn off multiple genes in the livers of mice, an advance that could lead to new treatments ...
Splitting fluorescent protein helps image clusters in live cells
Dec 26, 2009 |
4 / 5 (2) |
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Half a protein is better than none, and in this case, it's way better than a whole one. A Rice University lab has discovered that dividing a particular fluorescent protein and using it as a tag is handy for analyzing the ...
S.Korea issues warning against 'yellow dust'
Dec 25, 2009 |
3.7 / 5 (3) |
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South Korea's weather service Friday issued a warning against airborne pollution known as "yellow dust", advising residents in western areas to avoid outdoor activities.
Scientists identify protein that keeps stem cells poised for action
Dec 24, 2009 |
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(PhysOrg.com) -- Like a child awaiting the arrival of Christmas, embryonic stem cells exist in a state of permanent anticipation. They must balance the ability to quickly become more specialized cell types with the cellular ...
Genomic toggle switches divide autoimmune diseases into distinct clusters
Dec 23, 2009 |
5 / 5 (1) |
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Genomic switches can predispose an individual to one set of autoimmune disorders but protect the same person against another set of them, scientists at Stanford University School of Medicine have found.
A novel gene found for childhood-onset asthma
Dec 23, 2009 |
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Pediatric researchers have identified a novel gene involved in childhood asthma, in one of the largest gene studies to date of the common respiratory disease. Because the gene, called DENND1B, affects cells and signaling ...
Keck Telescopes Take Deeper Look at Planetary Nurseries
Dec 23, 2009 |
4.8 / 5 (13) |
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(PhysOrg.com) -- Astronomers using the W. M. Keck Observatory have peered far into a young planetary system, giving an unprecedented view of dust and gas that might eventually form planets similar to Jupiter, ...
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