A researcher was interested in the impact of exercise on tumor growth in mice. She took 50 mice with tumors and measured the size of their tumors. She then had them walk each day on the treadmill for 6 weeks. All of the mice were fed the same diet, held under the same environmental conditions and required to walk the same amount on the treadmill. At the end of the experiment, she measured the size of their tumors and calculated the change in size. What is the independent variable in this experiment?
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Biology, 21.06.2019 17:40, Yung5hagger
What links the two strands in a dna helix together in the middle? a. phosphate groups b. sugar rings bonded together c. proteins d. bases with hydrogen bonds
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Biology, 22.06.2019 20:50, sillyvanna
Assume that you are interested in separating short (200-400 bp) dna molecules from a pool of longer molecules in the 10,000-20,000 nucleotide range. you have two recipes for making your polyacrylamide gels: one recipe uses 1.5 percent agarose and would be considered a “hard gel,” while the other uses 0.5 percent agarose and would be considered a loose gel. which gel should you use to separate the short (200-400 bp) dna molecules from a pool of longer molecules in the 10,000-20,000 nucleotide range?
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Biology, 22.06.2019 21:00, jandrew2052
One student group hypothesized that the dry baker's yeast must be alive. the temperature change, odor, and bubble foation, they said, indicated whych characteristic of life
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A researcher was interested in the impact of exercise on tumor growth in mice. She took 50 mice with...
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