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

When using a pipette, the greatest accuracy is achieved by

Which of the following is TRUE with regards to a micropipette?

The following represents a centrifuge rotor. Where should you place 5 tubes to ensure the centrifuge is properly balanced?

Which type of rotor is best to use if you wish to separate a sample into a pellet and supernatant?

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

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

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?

The Belmont Report requires “justice” and a “fairness in distribution”. This refers to