A 39 kDa protein would consist of approximately ______ amino acids.

When would a transfer (Pasteur) pipette be used in the lab?

An experiment calls for 325 ml of 45% w/v solution of NaCl (Mw = 58.44). How many grams of NaCl are needed?

An experiment calls for 475 ml of 65 mM Tris (Mw = 121.14 g/mol), and you have a 4 M stock of Tris. How many milliliters of Tris are needed to make this solution?

Which micropipette should be used for the most accurate transfer of 50 microliters?

A 150 kDa protein would consist of approximately ______ amino acids.

You analyze a DNA sample which gives an A260 of 1.56 and an A280 of 0.98. What is the concentration of this DNA sample, and is it sufficiently pure?

How do you prepare 600 ml of 50 mM Tris (Mw = 121.14)?

You want to load DNA onto a gel which has 40 µl wells. How much of a 5X stock of sample loading buffer should be mixed with the DNA to fill up the well?

You add 1000 microliters of Folin reagent to a lysate sample and read its absorbance in the spectrophotometer, which gives a reading of 0.3 compared to a blank. This is a(n) ________ measurement.