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MCQs

Total Questions : 18 | Page 2 of 2 pages
Question 11. . How do you turn a signal recorded in the time domain into a frequency domain signal?
  1.    Fourier transformation
  2.    Measurement of peak areas
  3.    By use of a Michelson interferometer
  4.    None of the above
 Discuss Question
Answer: Option A. -> Fourier transformation
Question 12. . An FT-IR instrument record a signal in the
  1.    time domain
  2.    frequency domain
  3.    both (a) and (b)
  4.    none of these
 Discuss Question
Answer: Option A. -> time domain
Question 13. . In immunofluroscence microscopy, fluroscent compounds are attached to
  1.    an antibody specific for the subcellular structure
  2.    an antigen specific for the subcellular structure
  3.    bound antibody specific for the subcellular structure
  4.    none of these
 Discuss Question
Answer: Option A. -> an antibody specific for the subcellular structure
Question 14. . The frequency of precession, the transition frequency and the Larmor frequency are
  1.    different terms for the same frequency
  2.    same terms for the same frequency
  3.    different terms for the different frequency
  4.    same terms for the different frequency
 Discuss Question
Answer: Option A. -> different terms for the same frequency
Question 15. . Negative staining is a technique used in
  1.    electron microscopy
  2.    gel electrophoresis
  3.    immunocytochemistry
  4.    D. light microscopy
 Discuss Question
Answer: Option A. -> electron microscopy
Question 16. . When radiation energy is absorbed by a spin 1/2 nucleus in a magnetic field, what happens?
  1.    The processional frequency of the nucleus increases
  2.    The nucleus spins faster
  3.    The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field
  4.    none of the above
 Discuss Question
Answer: Option C. -> The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field
Question 17. . When radiation energy is absorbed by a spin 1/2 nucleus in a magnetic field, what happens?
  1.    The processional frequency of the nucleus increases
  2.    The nucleus spins faster
  3.    The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field
  4.    none of the above
 Discuss Question
Answer: Option C. -> The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field
Question 18. . Negative staining is a technique used in
  1.    electron microscopy
  2.    gel electrophoresis
  3.    immunocytochemistry
  4.    D. light microscopy
 Discuss Question
Answer: Option A. -> electron microscopy

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