Using the standard curve below, what is the concentration of a sample that gives an absorbance of 0.3 when 6 microliters of sample are assayed?
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Buffers lose their capacity to resist changes in pH when
Buffers lose their capacity to resist changes in pH when
The absorbance of a solution is directly proportional to
The absorbance of a solution is directly proportional to
You analyze a DNA sample which gives an A260 of 1.87 and an…
You analyze a DNA sample which gives an A260 of 1.87 and an A280 of 1.15. What is the concentration of this DNA sample, and is it sufficiently pure?
Escherichia coli is a defined organism with minimal risk of…
Escherichia coli is a defined organism with minimal risk of disease, and treatment involves taking antibiotics. A lab that studies this organism would be assigned a rating of
Phosphate buffers are advantageous because
Phosphate buffers are advantageous because
A protocol reports a sample was centrifuged for 15 minutes a…
A protocol reports a sample was centrifuged for 15 minutes at 10,000 rpm, but the rotor type is not listed. Which of the following is TRUE?
Which of the following involves copper binding to peptide bo…
Which of the following involves copper binding to peptide bonds?
What would you expect the transmittance of a sample to be if…
What would you expect the transmittance of a sample to be if the absorbance was 0.83?
You are working in a lab at UCF, and spill some hazardous wa…
You are working in a lab at UCF, and spill some hazardous waste on the floor. Who should you contact to clean up the spill?