Isotope

... that the Bible might not necessarily say what you seem to be taking for granted it says. Anyway, I owe you a more detailed description of radioisotope dating. I believe the question you asked was how one can know the original amounts of the isotopes in question. In short, the answer is that ...

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1, Name the monomer of which DNA is made: Nucleotide 2. In which part of the DNA monomer will the heavy isotope 15N from e. coli be found: The base 2b. Given that 15% of the bases in a piece of DNA are thymine, calculate the percentage of the bases that are guanine: 35% Given: ...

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... separate from nucleic DNA. (C.) They contain grana. (D.) They have their own ribosomes. (E.) They can function outside a cell. 21. By using the isotope oxygen-18 as a tracer element, it has been possible to show that the oxygen released in photosynthesis comes from (A.) oxygen-16 (B.) carbon ...

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... an oxygen atom (Be sure to include the location, charge, and number of subatomic particles). f. A nitrogen atom has 7 protons, and the most common isotope of nitrogen has 7 neutrons. A radioactive isotope of nitrogen has 8 neutrons. What is the atomic number and mass number of this radioactive ...

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One can also label cell surface antigens with radioactively labelled antibodies, although enzymatic labels have largely replaced radioactive isotopes in this. Another common method is putting isotopes in the medium, like Mith wrote. In our lab we use tritium-labelled thymidine, which the cells then ...

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