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31 August, 13:30

A researcher suspects that the food in an ecosystem has been contaminated with radioactive phosphates over a period of months. Which of the following substances could be examined for radioactive phosphate to test the hypothesis?

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  1. 31 August, 13:59
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    Answer: The DNA of the organism in that area.

    Explanation:

    Phosphate is found in the DNA of the organism. If the food is contaminated with the radioactive phosphate then it can be examined by the DNA of the organism that had food contaminated with phosphate.

    The DNA of the organism consists of the nitrogenous bases, ribose sugar and phosphate.

    The traced amount of phosphate can be found in it only.
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