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To fractionate a cell homogenate into its components, the best process to use would be

The analysis of electromagnetic radiation’s absorption is ________, and the measurement of this interaction for quantitative analysis is ________.

A protein has an absorbance of 0.41, and 6 tryptophans (ε = 5500) and 4 tyrosines (ε = 1490). What is its concentration?

When using a micropipette, you must push down to the second stop to

You wish to study the effects of of a drug’s concentration on bacterial growth. For this experiment, you alter the drug concentration and measure the change in bacterial growth, while making sure the temperature is constant in each sample. Which is the independent variable?

You want to load DNA onto a gel which has 36 µl wells. How much of a 3X stock of sample loading buffer should be mixed with the DNA to fill up the well?

When using a micropipette, you must push down to the first stop to

A group of graduate students gather every week to present papers from the latest editions of Nature. This is called a(n)

Using the standard curve below, what is the concentration of a sample that gives an absorbance of 0.5 when 4 microliters of sample are assayed?

How do you prepare 400 ml of 70 mM Tris (Mw = 121.14)?