At which point in the nitrogen cycle are nitrogen compounds
carried by water from land to lake...
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Why aren't the stains like crystal violet and safranin washed away with water during simple staining?
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Nucleic acid certain protein cell membranes certain carbohydrates
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Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?
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