FT IR SPECTROSCOPY QUIZ

Selectively filter certain wavelengths from a beam of I.R. radiation

None of these

Split a polychromatic beam of radiation into its component wavelengths

Modulate the I.R. signal at a lower frequency, so that it can be observed by a detector

different terms for the same frequency

same terms for the same frequency

different terms for the different frequency

same terms for the different frequency

The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field

The processional frequency of the nucleus increases

None of these

The nucleus spins faster

a specimen is fixed and then coated with transition metal

a specimen is fixed and then coated with thin layer of a heavy metal

None of these

a specimen is not fixed and then coated with thin layer of a heavy metal

Measurement of peak areas

Fourier transformation

None of the above

By use of a Michelson interferometer

That the sample is spun rapidly in the applied field

That the detector rotates around the sample

None of these

If the laboratory itself is imagined to be rotated at the Larmor frequency, viewing that individual magnetic moment vectors are fixed in space

11.05

8.5

7.5

10.05

Isoelectric point

Molecular mass

Solubility

Folding

light microscopy

gel electrophoresis

immunocytochemistry

electron microscopy

identification of the -NH2 terminal amino acids

identification of the -COOH terminal amino acids

All of these

partial cleavage of the original polypeptide into smaller polypeptides