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What radioactive tracer would you use to label only the protein in an RNA virus assume the virus is composed of only a protein coat and an RNA core?
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∙ 13y ago
Sulfur
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∙ 13y ago
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Who is experiment demonstrated that DNA is the molecule of heredity?
The Avery and Hershey-Chase Experiments • Alfred Hershey and Martha Chase provided the final experimental evidence that pointed to DNA as the hereditary material the team studied viruses that infect bacteria -the structure of these viruses is very simple: a core of DNA surrounded by a coat of protein -the viruses attach themselves to the surface of bacteria cells and inject their genes into the interior • the infected bacterial cell is then forced to make hundreds of copies of new viruses, which then burst out of the cell to infect new cells. • Hershey and Chase used radioactive isotopes to "label" or tag the DNA and the protein of the viruses -some viruses were grown so that their DNA contained radioactive phosporous (32P) -other viruses were grown so that their protein coats contained radioactive sulfur (35S) After the labeled viruses were allowed to infect bacteria, only the viruses with 32 P had labeled tracer in their interior • The conclusion was that the genes that viruses use to specify new viruses are made of DNA and not protein
What did Hershey and Chase show the genetic material of the t2 bacteriophage was?
DNA is the genetic material. However, Hershey-Chase also stated that some little sulfur containing material also entered the bacterial cell. Looking at these two conclusions, Hershey-Chase could not reach a definite conclusion as to whether DNA or Protein contains the genetic material. The conclusion came from Watson-Crick who stated that the sulfur containing material could have entered the cell due to the fact that DNA replication and subsequently translation of the mRNA leads to the synthesis of sulfur containing protein which were found in the bacterial cell.
What kind of tracer is used in a bone scan?
Radio active
What are the radioisotopes that attach themselves to red blood cells?
tracer
Whole body bone scan shows focal increased tracer uptake in frontal bone spines C7 toD1D5D11L1left sixth ribright 9th ribposteriorly for a 60 yr old female wat could b the problem?
Osteoprosis
How does radioactive tracer get into the body?
They dissolve it in a liquid and the patient drinks it
Radioactive isotopes that can be followed through a chemical reaction or a industrial process is?
tracer
How much radioactive tracer is injected into the vein for a typical bone scan?
About 1 Mg.
Which radioactive tracer showed up in the bacteria that led Hershey and Chase to their conclusion that DNA not Protein was the genetic material?
According to my bio book, I think it's Alfred Hershey and Martha Chase, in the HERSHEY-CHASE experiment.
What is the only difference between ELISA and RIA?
RIA measures scintillation due to decay of radioactive tracer. ELISA measures a color change due to an enzyme tracer.
Nuclear medicine uses these to image organs for diagnosis and treatment?
radioactive material called a tracer
Would a substance with a one second life be effective as a radioactive tracer?
the dog ate the bacon
What is a radioactive tracer and give an example of how one might be used?
A radioactive tracer is a radioactive atom inserted in a compound to see what happens to it in a reaction, usually in biotechnology. For example, to find out where carbon atoms go in photosynthesis, scientists can give the plants carbon dioxide with carbon-14 instead of carbon-12 and track the progress of the carbon-14.
What is a radioactive tracer Give an example of how one might be used.?
A radioactive tracer is a radioactive atom inserted in a compound to see what happens to it in a reaction, usually in biotechnology. For example, to find out where carbon atoms go in photosynthesis, scientists can give the plants carbon dioxide with carbon-14 instead of carbon-12 and track the progress of the carbon-14.
Would a substance with a one-second half-life be effective as a radioactive tracer?
the dog ate the bacon
A tracer is a radioactive element whose pathway through the steps of a chemical reaction can be followed?
Yes a tracer is a radioactive element whose pathway through the steps of a chemical reaction can be followed. It can be used to explore the mechanism of chemical reactions by tracing the path that the radioisotope follows from reactants to products.
How dangerous is technetium?
Technetium is not really dangerous. Since doctors will often use Technetium 99 as a radioactive tracer. It may be radioactive but its decay is slow and will produce a minute amount of gamma rays.
