You submit a paper for publication to Nature. Which of the following is FALSE?

Amino acids found in an enzyme’s active site are usually

How do you prepare 1 L of 30 mM Tris pH 8 (Mw = 121.14), 200 mM NaCl (Mw = 58.44) from a 1 M stock of Tris pH 8? 

The amount of solute dissolved in a given amount of solution is the

A protein has an absorbance of 0.36, and 3 tryptophans (ε = 5500) and 2 tyrosines (ε = 1490). What is its concentration?

How do you prepare 250 ml of 80 mM Tris (Mw = 121.14)?

The Mohr pipette has a ________ tip because its purpose is ________ an exact amount for multiple dispenses.

Which of the following reactions is NOT energetically favorable?

Which of the following would you use for accurately dispensing a sample multiple times from a single aspiration, and is considered “to contain”?

You pipette 10 microliters of BSA (1 mg/ml) into Coomassie and read its absorbance in the spectrophotometer, which gives a reading of 0.5 compared to a blank. This is a(n) ________ measurement.