Laboratory Testing
Genetics

IF DNA is labeled radioactive and allowed to replicate how much radioactivity in newly synthesized DNA?

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2007-12-31 20:26:39
2007-12-31 20:26:39

WHAT IS DNA MADE FROM>

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If you are claiming it as your own choreography then no. Shows of that nature are subject to copyright and may require permission to use or replicate aspects of the show.


Their discoveries of the elements that produce radiation allowed for the medical practices of using radioactivity to treat cancer. Some of these practices, for example placing radioactive 'seeds' near cancerous growths are still practiced today. Marie Curie also invented portable X-Ray machines she took into the battlefields of WWI to help locate shrapnel and bullets in injured soldiers.


Hershey (you know, Alfred Hershy) and Chase (you know again, Martha Chase) did some experiments with Bacteriophages (you know, viruses that affect Bacteria). What they did in the experiment was that, they grew some of these Bacteriophages on a medium which contained radioactive Sulphus(S)(remember, radioactivity can be detected easily). Then, they also took some other Bacteriophages. But, they were grown on radioactive Phosphorur(P)..... (Don't 4get(that's forget)), DNA also has Phosphorus in it (DNA = Nitrogen bases + Pentose sugar + Phosphorus). Now, back to the experiment ------ The Bacteriophages that were grown on radioactive Phosphorus contained radioactive DNA. But they didn't have any radioactive protein coat. (remember viruses have a protein coat covering their DNA?) Then, bacteriophages (please call them B from now, but not in the exams), which were grown in S (radioactive sulphur, remember?), had a radioactive protein coat (protien coats are made up of sulphur and some other elements), but no radioactive DNA........ That was the first part....................... Now, the next one.......................... Radioactive B's, from both P and S were allowed to attach to E.coli (Esterichia coli) bacteria as an attack (or infection). After infection, The protein coats were removed by agitating (stirring real fast) in a blender (they're still not removed). Then, these virus particles (protein coats) wer removed by centrifugation (using centrifugal machine). Then, the third big step....................................… The observation part....................................… It was observed that, some bacteria were radioactive and many were not. Also, it was observed that, bacteria which were attacked by B (Bacteriophage) having radioactive DNA were the ones which were radioactive..... Also that, bacteria which were attacked by B having S weren't radioactive...... So, it lead to the point that proteins didn't pass into bacteria, but it was the DNA that did...... So, DNA was concluded to be the genetic material...... Viruses were chosen because they only had genetic meterial & coat This is from yahoo anwsers btw


Food is irradiated by a radioactive isotope to kill microscopic organisms or insects that can cause spoilage. This is presently allowed in only 50 countries worldwide.


because Allah is supreme human can't affort the holy light of Allah and will be distroyed there are many things we cannot see for ex: radioactivity that we cannot see it but it can even kill us


Some examples include: * Growth of populations, under certain circumstances * Radioactive decay * In quantum physics, the probability of finding a particle at a specific point * The temperature of an object, when it is allowed to cool down * The charge on a capacitor which is allowed to discharge


It allowed him to see the pathway of protein secretion from the rough ER to the golgi apparatus via vesicles to the nuclear membrane via vesicles, and then out of the cell. He was able to see it by staining radioactive proteins and looking at them at different times after the injection of the radioactive amino acid occured to see where the proteins were.


No, the word allowed is not an adverb.The word allowed is a verb.


"Aloud" is a homonym of "allowed"


AllowedWhen you are allowed to do something


Yes, If the explosion is on or above the surface of the earth the immediate area is subjected to intense heat and will melt into glass. Also the explosion will disperse radioactive products into the air and this plume will settle out in time polluting the land where it falls. When the explosion is subterranean (the only type allowed once the damage of surface testing was obvious) then the distributed radioactive pollution problem is mitigated but the explosion hollows out a chamber under the ground and causes a pockmark depression above the test site. The earth is big these, these pockmarks are not serious but problems could occur were groundwater to seep through the test area (a risk that is enhance due to the fracturing caused by the explosion) and carry radioactivity to other places. All in all it is best not to test bombs, if you must then use a computer to simulate/model the explosion rather then setting a bomb off.


Bearing in mind that in 1986 the Soviet bloc was still closed to reporting to the outside world, I think the first news on the world's free press came from Sweden, but I am sure it was also noticed in parts of Russia, and also in Poland, they just weren't allowed to report it.


peeing on the streets are not allowed in Poland but allowed in India


DNA's ability to "self"-replicate allowed life to continue from the first cell through each organism's every cellular-division (mitosis/meiosis) up until present day life. It can be though of as a torch like at the Olympics (except for real) where the flame never goes out, just allowed to ignite more and more flames. But it's still the original flame, never had to be lit a second time!


Here are some sentences.He allowed her to win.Is that allowed here?


yes!They are allowed on hotmail. When i was sevan i was allowed hotmail. But you might not be allowed too.


no,it is not allowed only people are allowed


They are not allowed to work on the Sabbath, not allowed to eat swine.


no in olden times they were not allowed but presently they were allowed


The correct sentence is He is allowed to do it on his own.



I am not allowed to play outside after dark. The puppy is not allowed in the living room, yet.


They are not allowed to get married. Only the deacons are allowed to be married.


No. Completely not allowed.


They were allowed to go to church



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