An experiment calls for 375 ml of 55% w/v solution of NaCl (Mw = 58.44). How many grams of NaCl are needed?
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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.
Most centrifuges use a rotor that angles the tubes because
Most centrifuges use a rotor that angles the tubes because
A protein has a concentration of 60 µM, and 2 tryptophans (ε…
A protein has a concentration of 60 µM, and 2 tryptophans (ε = 5500) and 3 tyrosines (ε = 1490). What is its absorbance?
Which of the following is equal to 50 ng/µl?
Which of the following is equal to 50 ng/µl?
Swinging bucket centrifugation can be used to purify viruses…
Swinging bucket centrifugation can be used to purify viruses via a
The Belmont Report requires “respect for persons”. This refe…
The Belmont Report requires “respect for persons”. This refers to