A group of graduate students gather every week to present papers from the latest editions of Nature. This is called a(n)
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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 0.5 when 4 microliters of sample are assayed?
How do you prepare 400 ml of 70 mM Tris (Mw = 121.14)?
How do you prepare 400 ml of 70 mM Tris (Mw = 121.14)?
What would you expect absorbance of a sample to be if it had…
What would you expect absorbance of a sample to be if it had a transmittance of 26%?
You have a stock of DNA ligase at 100,000 units/µl. You need…
You have a stock of DNA ligase at 100,000 units/µl. You need 5,000 units of ligase in a 10 µl reaction, how many microliters of ligase do you need?
An experiment calls for 375 ml of 55% w/v solution of NaCl (…
An experiment calls for 375 ml of 55% w/v solution of NaCl (Mw = 58.44). How many grams of NaCl are needed?
What is the extinction coefficient of a protein with a conce…
What is the extinction coefficient of a protein with a concentration of 1.25 μM and absorbance of 0.65?
80 ng of DNA is needed for a ligation, and its concentration…
80 ng of DNA is needed for a ligation, and its concentration is 30 ng/µl. How many microliters of DNA are required?
Why are the tubes used in fixed-angle centrifugation pointed…
Why are the tubes used in fixed-angle centrifugation pointed at the bottom?
A 50 kDa protein would consist of approximately ______ amino…
A 50 kDa protein would consist of approximately ______ amino acids.