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KRUSELL 71112 Radical...
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...In chemistry, radicals (often referred to as free radicals) are atoms, molecules, or ions with unpaired electrons on an open shell configuration. The unpaired electrons cause them to be highly chemically reactive. 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, although a radical may be trapped within a solvent cage or be otherwise bound. The first organic free radical identified was triphenylmethyl radical, by Moses Gomberg in 1900 at the University of Michigan. Read full entry
This entry is from Wikipedia,the leading user-contributed encyclopedia.It may not have been reviewed by professional editors(See full disclaimer)
- POM Fights Free Radicals
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- 1.Radical (chemistry) - Wikipedia, the free encyclopedia
- The longest-lived free radical is melanin, which may persist ... Free radical reaction ... Probably the most familiar free-radical reaction for most people ...
- http://en.wikipedia.org/wiki/R
adical_(chemistry)
- 2.Free-radical theory - Wikipedia, the free encyclopedia
- The free-radical theory of aging (FRTA) states that organisms age because cells ... A free radical is any atom or molecule that has a single unpaired electron in an ...
- http://en.wikipedia.org/wiki/F
ree-radical_theory
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What is the exact damage of A free radical is an atom with
an unpaired electron in its
shell. But is this what free
radical damage actually is ?
The free electron has a strong
charge that causes it to pair
up with one of the electrons
of a pair of electrons on the
shell of another atom. The
extra electron is pushed out
and pairs up elsewhere. When
the unpaired electron of one
atom pairs up with an electron
on the shell of another atom,
the pull between the two
electrons hold or bonds the
two atoms together. This type
of bonding creates bonds
between atoms that ordinarily
wouldn't bond. So is the
damage of free radical damage
atoms haphazardly being
attached to atoms of molecules
of structures, and thus
changing the structure?
Thanks Much
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Free radicals tend to be high energy species and therefore have very low specificity for reacting. Under the correct circumstances, they can also start chain reactions.effecting many molecules. |
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What is the difference between Why is oxygen in the form of a
"free radical" bad, but oxygen
in general clearly essential
for life? What is the
difference? My understanding
is that the free radical has
one electron that is not
paired and thus makes it
reactive. So how is
stable/nonreactive oxygen used
by the body?
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Normal O2 is actually a radical, because it has 2 unpaired electrons. That is why pure oxygen is both toxic and highly reactive, and people should not breathe large doses of pure oxygen for long times. These free electrons, however, allow the binding of oxygen to our red blood cells, and allows for proper transport. Our bodies are able to use certain amounts of the free oxygen; higher concentrations become dangerous. Other free radicals are not handled easily by our bodies, and they are more likely to cause damage. |
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How does free radical damage I have been reading about
antioxidants lately and I want
to ask how does free radical
damage make a person feel on
terms of health and also what
damage can it do?
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A free radical is just a fancy name for a free electron (you may know that everything is made of protons, electrons and neutrons at the atomic level). Different things are made up of different numbers of protons, different numbers of electrons and neutrons. This free radical (or free electron) has a negative charge and doesn't have a "buddy" (ie a positively charged proton) to neutralise it. So, it bounces from place to place. Where it does damage is it may hit another atom (ie another "thing"). This will then change the numbers of electrons/neutrons of the other "thing", therefore change its configuration, leading to a mutation and possibly cancer (this change in configuration is the radical damage). An antioxidant partners with the free electron, essentially getting rid of it. You can't feel the effects of this radical damage because it is at atomic level. If the mutation leads to cancer (which is basically uncontrolled growth of something which our body recognises as foreign), then when the cancer gets big enough and interferes with our normal body function, it is then that we feel the effects of cancer. Hope this helps. It's hard to explain something as complex as this in a succinct way, especially since I don't know the level of your background knowledge. Feel free to email me if you need more information. |
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