Which of the following can be used in mass spectrometry for quantifying differences in protein abundance in a comparison of two samples?
A) relative fluorescent intensity
B) relative gamma emissions
C) relative beta emissions
D) relative height of peaks in the mass spectrum
E) relative increases in molecular mass

Question

Quizplus · Accepted Answer

The relative height of peaks in the mass spectrum can be used as a measure of abundance of different proteins in the two samples being compared. This is because the height of each peak in the mass spectrum corresponds to the number of ions of that mass that are detected, which is directly proportional to the abundance of the corresponding protein.

Which of the Following Can Be Used in Mass Spectrometry