FT IR SPECTROSCOPY QUIZ

light microscopy

immunocytochemistry

gel electrophoresis

electron microscopy

a specimen is fixed and then coated with transition metal

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

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

None of these

partial cleavage of the original polypeptide into smaller polypeptides

All of these

identification of the -NH2 terminal amino acids

identification of the -COOH terminal amino acids

frequency domain

time domain

both (a) and (b)

none of these

To remove inaccuracies caused by fluctuations in the applied magnetic field

To increase sensitivity

None of these

To ensure that all target nuclei in the sample have been excited

None of these

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

6

4

2

3

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

Split a polychromatic beam of radiation into its component wavelengths

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

None of these

different terms for the same frequency

different terms for the different frequency

same terms for the different frequency

same terms for the same frequency

8.5

11.05

10.05

7.5