In which technique is a protein solution pumped through a metal needle at high voltage to create tiny droplets that are analyzed for their mass/charge ratio?
A)Electrospray mass spectrometry.
B)MALDI-TOF.
C)Aerosol microscopy.
D)Millikan analysis.
E)SDS-PAGE.

Question

Quizplus · Accepted Answer

The technique described is electrospray mass spectrometry, in which a protein solution is pumped through a metal needle at high voltage to create tiny droplets that are ionized and analyzed for their mass/charge ratio. Choice B (MALDI-TOF) also involves mass spectrometry, but it uses a different ionization technique and does not involve pumping the sample through a needle. Choices C, D, and E are not relevant to this technique.

In Which Technique Is a Protein Solution Pumped Through a Metal