2006-10-11 05:57:51 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Weather
This homework question was set to make you think - not to make me think! If I were to give an answer it would do you no good whatever!
2006-10-15 03:28:52 · answer #1 · answered by clausiusminkowski 3 · 0⤊ 0⤋
This finding could have broad implications for cellular biology research, which receives billions of dollars of funding nationally, said Chandan of the Laboratory of Molecular Medicine at Ohio States Davis Heart and Lung Research Institute. He is the lead author of a study which suggests that cells act differently depending on how much oxygen they are exposed to, especially when it is too much.
Most cellular biology research is done in an open-air environment containing atmospheric oxygen levels (about 21%), which triggers cellular stress as the body cells are used to oxyen levels of 10 to 0.5%.When Sen and his colleagues exposed mouse heart cells to normal open-air oxygen levels, cell growth slowed and the cells underwent some significant physiological changes, such as producing arrays of free radicals and specific oxygen-sensitive genes.
The study of cancer tumors is one example of the effect open-air oxygen can have on cellular research. Current research suggests that adding oxygen to tumors will increase the concentration of free radicals made in the tumor and therefore promote the effectiveness of radiation therapy.
High oxygen levels in a laboratory may halt cell growth, and even change a cells physical characteristics, he said. There is a clear risk of seeing cellular responses that normally dont happen inside the body. Regulating oxygen levels for cell cultures should take us a step closer to what goes on in real life.
The research appears online in the current issue of the journal Circulation Research.
MEDICA.de, Source: Ohio State University
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IF THIS IS ANY HELP
2006-10-11 13:59:59 · answer #2 · answered by sarmally 1 · 0⤊ 0⤋
More oxygen. Depends how much. If there were a *lot* more then fires would be a *lot* bigger.
Also more O2 (oxygen) implies less CO2 (Carbon dioxide) that's not good for plants. Although it'd take a big change to make much difference.
2006-10-11 13:01:05 · answer #3 · answered by Paul E 2 · 1⤊ 0⤋
More oxygen would mean that we would be able to take in more oxygen with ease, and less well, we will have to produce lots and lots more red blood cells and breath faster to gain oxygen.
2006-10-11 14:14:58 · answer #4 · answered by lilpeeps1 1 · 0⤊ 0⤋
If oxygen levels got too high, they could become explosive. Imagine a high atmosoheric level of oxygen and then a lightning storm. BOOM!! Low levels of oxygen wouldn't allow some life to exist. various complex organisms require certain levels of oxygen to sustain thenselves.
2006-10-11 13:01:08 · answer #5 · answered by Topher 3 · 0⤊ 0⤋
It wouldn't happen - because the methane in the atmostphere would burn and combine with the oxygen - especially in a storm. Unless of course you could stop all the animals farting....
2006-10-12 16:56:07 · answer #6 · answered by Mike10613 6 · 0⤊ 1⤋