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In our lab some sources of error might have been not

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In our lab some sources of error might have been not having exact temperatures in ice and hot water bath, or not extracting all of DNA which would lead to lower mass percent. Other sources of error might have been extracting too much liquid with DNA which would lead to a high mass percent. There is also a chance we may not have thoroughly filtered the solution. Our mass percent from a 10.73 g strawberry was 0.19%. Questions: 1. Calculate percent mass in strawberry sample: Mass percent: (Weight of DNA/Weight of Strawberry) X 100 (.02g/10.73g) X 100= 0.19% Sources of error in order from greatest to smallest: Not extracting all of DNA- lower mass percent Extracting too much liquid with DNA- high mass percent Not thoroughly filtering solution- lower mass percent
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Not having exact temperatures in ice and hot water bath 2. Consider the quantity of DNA in an average cell of a bacterium and a human cell. Which one would you think contains more DNA, and by what factor does that type of cell contain more DNA. Explain your reasoning. Check your answer on the WWWeb and indicate whether this data agrees or disagrees with your belief. An average human cell would contain more DNA by a factor of at least two. This is because a bacterium is a prokaryotic cell and is much smaller and less complex than the human cell which is eukaryotic. Information found on the WWWeb agrees with my belief; although, a eukaryotic cell is greater than a prokaryotic cell by a factor of 50.
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