FT IR Spectroscopy
The sequence of amino acids in proteins can be determined by means of

identification of the -NH2 terminal amino acids
identification of the -COOH terminal amino acids
partial cleavage of the original polypeptide into smaller polypeptides
All of these

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FT IR Spectroscopy
What is meant by rotating frame of reference?

If the laboratory itself is imagined to be rotated at the Larmor frequency, viewing that individual magnetic moment vectors are fixed in space
None of these
That the sample is spun rapidly in the applied field
That the detector rotates around the sample

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FT IR Spectroscopy
What does the Michelson interferometer do?

Selectively filter certain wavelengths from a beam of I.R. radiation
Split a polychromatic beam of radiation into its component wavelengths
None of these
Modulate the I.R. signal at a lower frequency, so that it can be observed by a detector

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FT IR Spectroscopy
When radiation energy is absorbed by a spin 1/2 nucleus in a magnetic field, what happens?

The processional frequency of the nucleus increases
The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field
The nucleus spins faster
None of these

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