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You analyze a DNA sample which gives an A260 of 1.15 and an…

You analyze a DNA sample which gives an A260 of 1.15 and an A280 of 0.67. What is the concentration of this DNA sample, and is it sufficiently pure?

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Steps of protocols are allowed to be omitted from a journal…

Steps of protocols are allowed to be omitted from a journal if

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In NIH study sections at the Center for Scientific Review,

In NIH study sections at the Center for Scientific Review,

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To harvest bacteria or yeast in large volumes (e.g. 50 liter…

To harvest bacteria or yeast in large volumes (e.g. 50 liters) you should use a(n)

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It is important to conduct double-blind experiments when pos…

It is important to conduct double-blind experiments when possible to

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A researcher receives a five year grant from the NIH, and a…

A researcher receives a five year grant from the NIH, and a percentage of the grant money is given to the Office of Research. This is considered

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Using the standard curve below, what is the concentration of…

Using the standard curve below, what is the concentration of a sample that gives an absorbance of 0.3 when 6 microliters of sample are assayed?

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How do you prepare 1 L of 80 mM Tris pH 8 (Mw = 121.14), 400…

How do you prepare 1 L of 80 mM Tris pH 8 (Mw = 121.14), 400 mM NaCl (Mw = 58.44) from a 1 M stock of Tris pH 8? 

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The absorbance of a solution is directly proportional to

The absorbance of a solution is directly proportional to

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Which of the following quantification assays is most variabl…

Which of the following quantification assays is most variable with regards to the protein’s sequence?

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