FT IR Spectroscopy
In immunofluroscence microscopy, fluroscent compounds are attached to

none of these
an antigen specific for the subcellular structure
an antibody specific for the subcellular structure
bound antibody specific for the subcellular structure

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FT IR Spectroscopy
Why is it advantageous to record many FID signals from the same sample and then add them together?

To increase sensitivity
To ensure that all target nuclei in the sample have been excited
None of these
To remove inaccuracies caused by fluctuations in the applied magnetic field

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FT IR Spectroscopy
In FT-NMR, how are nuclei excited?

By an intense pulse of radiation which contains a wide range of frequencies
None of these
By radio-frequency radiation whose frequency is swept across a predetermined range
By an intense pressure

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