i ask about free radicals..?
916768
http://en.wikipedia.org/wiki/Free_radical#Free_radicals_in_biology
1072970
You best resource is the internet. Since you are the only on who knows what your level of understanding is, only you can choose from the multitude of sources.  Please choose the one that comes closest to what you need:\nhttp://www.google.com/search?num=100&hl=en&lr=lang_en&q=cell+membrane+loose+stability+%2B+oxygen+depletion&btnG=Search\nhttp://search.yahoo.com/search?fr=ytff1-&p=cell%20membrane%20loose%20stability%20%2B%20oxygen%20depletion&ei=UTF-8
867426
Maybe this well help...\n\nhttp://www.valueseek.com/glutathione/
646886
do some reserch. oh and thanks for the link!!! it relly helped me.
383259
go to\nwww.chemistry.com
761487
HI,\n\nAn antioxidant is a chemical that reduces the rate of particular oxidation reactions in a specific context, where oxidation reactions are chemical reactions that involve the transfer of electrons from a substance to an oxidising agent.\n\nAntioxidants are particularly important in the context of organic chemistry and biology. All living organisms maintain a reducing environment inside their cells, all cells contain complex systems of antioxidants to prevent chemical damage to the cells' components by oxidation. These antioxidants include glutathione and ascorbic acid and are substrates for enzymes such as peroxidases and oxidoreductases.\n\nA diet containing polyphenol antioxidants from plants is required for the health of most mammals, since plants are an important source of organic antioxidant chemicals. Antioxidants are widely used as ingredients in dietary supplements that are used for health purposes such as preventing cancer and heart disease. However, while many studies have suggested benefits for antioxidant supplements in laboratory experiments, several large clinical trials have failed to clearly demonstrate a benefit for the formulations tested, and excess supplementation may be harmful. It is logical to assume that a one dimensional approach to dietary supplementation with one specific antioxidant is not a panacea, since a broad diet rich in phytonutrients will yield thousands of different polyphenol antioxidants available for metabolism.\n\nRedgs,\n\nVenkat
25121
The principle works, but the technical applicability is rather low.\n\nYou can use hydrogen peroxide solution in higher concentrations, as used by hair stylists or as concentrate for cleaning contact lenses. The reaction speed will be increased considerably. Unfortunately, reaction heat will become an issue, too, and oxidation of potatoes as well.
405431
They react with oxidant molecules and free radicals that are present inside your body. Highly oxidant molecules otherwise react with proteins and cellular components, that can damage cells.\n\nSo antioxidants help to protect your cells.
1059711
go to ur dr.they give free samples
1081543
i find  your question, interesting but quite inexplicable .\n this is something new to me . I was not  very attentive in my chemistry studies ..\n\n My memory centre is all clogged up with other facts , just now ; \n this must be the reason for me , to draw a blank here\n \n i will go hang my head in shame .\n \n or hunt up that  answer,  LIT UP for all to see , on Google or some other wondrous search engine .\n\n good luck \n \n.
444407
There are many ways, but free radicals can react with a cell that alters the DNA, which could possible lead to cancer.  Check out the Wiki for more information: http://en.wikipedia.org/wiki/Free_radical
954561
Trying to make nitroglycerin, eh?\n\nWon't find out how to do it from me.  And beware of some of the other sources out there -- they're deliberately miswritten so that you'll blow yourself up.
903135
Short answer, they cause cancer.\n\nLong answer:\nIn chemistry, radicals (often referred to as free radicals) are atomic or molecular species with unpaired electrons on an otherwise open shell configuration. These unpaired electrons are usually highly reactive, so radicals are likely to take part in chemical reactions. Because they are uncharged, their reactivity is different from the reactivity of similar ions. Radicals play an important role in combustion, atmospheric chemistry, polymerization, plasma chemistry, biochemistry, and many other chemical processes, including human physiology. For example, superoxide and nitric oxide regulate many biological processes, such as controlling vascular tone. "Radical" and "Free Radical" are frequently used interchangeably, however a radical may be trapped within a solvent cage or be otherwise bound. The first organic free radical, the triphenylmethyl radical was identified by Moses Gomberg in 1900.\n\nHistorically, the term radical has also been used for bound parts of the molecule, especially when they remain unchanged in reactions. For example, methyl alcohol was described as consisting of a methyl 'radical' and a hydroxyl 'radical'. Neither were radicals in the usual chemical sense, as they were permanently bound to each other, and had no unpaired, reactive electrons. In mass spectrometry, such radicals are observed after breaking down the substance with a hail of energetic electrons.\nFree radicals are atoms or groups of atoms with an odd (unpaired) number of electrons and can be formed when oxygen interacts with certain molecules. Once formed these highly reactive radicals can start a chain reaction, like dominoes. Their chief danger comes from the damage they can do when they react with important cellular components such as DNA, or the cell membrane. Cells may function poorly or die if this occurs. To prevent free radical damage the body has a defense system of antioxidants.\n\nAntioxidants are molecules which can safely interact with free radicals and terminate the chain reaction before vital molecules are damaged. Although there are several enzyme systems within the body that scavenge free radicals, the principle micronutrient (vitamin) antioxidants are vitamin E, beta-carotene, and vitamin C. Additionally, selenium, a trace metal that is required for proper function of one of the body's antioxidant enzyme systems, is sometimes included in this category. The body cannot manufacture these micronutrients so they must be supplied in the diet.\n\nVitamin E : d-alpha tocopherol. A fat soluble vitamin present in nuts, seeds, vegetable and fish oils, whole grains (esp. wheat germ), fortified cereals, and apricots. Current recommended daily allowance (RDA) is 15 IU per day for men and 12 IU per day for women.\n\nVitamin C : Ascorbic acid is a water soluble vitamin present in citrus fruits and juices, green peppers, cabbage, spinach, broccoli, kale, cantaloupe, kiwi, and strawberries. The RDA is 60 mg per day. Intake above 2000 mg may be associated with adverse side effects in some individuals.\n\nBeta-carotene is a precursor to vitamin A (retinol) and is present in liver, egg yolk, milk, butter, spinach, carrots, squash, broccoli, yams, tomato, cantaloupe, peaches, and grains. Because beta-carotene is converted to vitamin A by the body there is no set requirement. Instead the RDA is expressed as retinol equivalents (RE), to clarify the relationship. (NOTE: Vitamin A has no antioxidant properties and can be quite toxic when taken in excess.)
1009358
U r asking for a science project.?\nI have an idea for the science project for chemistry side
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http://www.lloydminsterheavyoil.com/nitrogen.jpg\nhttp://www.tcm.phy.cam.ac.uk/castep/MD/img43.png
1176289
there is no such thing as an imbalaced biostructure.  Unstable molecules are a piece of fictional technology.  Do you mean free radicals?  most of them are produced, or were there in the beginning.  They self-replicated and had very low 'life'.  that's all I can do for now.
817601
try the local chemist....