1).
i). What substances have DNA?
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Fruits, but not animal products |
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All animal products, but not plant products |
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Live fruits and vegetables, but DNA content decreases rapidly |
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Live animals, but not dead ones |
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All cells contain DNA, in all organisms, living or dead |
ii). The purpose of dish soap in a DNA extraction is
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To separate DNA from water |
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To disrupt the lipid (cell membrane) |
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To clean the DNA off |
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To reduce protein content |
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Dish soap is a negative control |
iii). The purpose of meat tenderizer in a DNA isolation is
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Meat tenderizer is a negative control |
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Meat tenderizer is a positive control |
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Meat tenderizer solubilizes the cell |
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Meat tenderizer is a protease, and degrades protein |
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Meat tenderizer solubilizes DNA |
iv). How is isopropyl alcohol useful in DNA extractions?
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DNA becomes visible when it contacts alcohol, because the |
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DNA becomes visible when it contacts alcohol, because DNA is not |
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Alcohol dries off the water in the DNA extraction |
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Alcohol solubilizes the cell membrane and releases the DNA |
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