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Biochemistry - FT IR Spectroscopy

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Exercise : FT IR Spectroscopy - Section 1
  • FT IR Spectroscopy - Section 1
1.
Which of the following is the basis of first dimension of separation for two-dimensional electrophoresis?
Molecular mass
Solubility
Isoelectric point
Folding
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
What is meant by rotating frame of reference?
That the sample is spun rapidly in the applied field
If the laboratory itself is imagined to be rotated at the Larmor frequency, viewing that individual magnetic moment vectors are fixed in space
That the detector rotates around the sample
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
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 the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Why is it advantageous to record many FID signals from the same sample and then add them together?
To ensure that all target nuclei in the sample have been excited
To remove inaccuracies caused by fluctuations in the applied magnetic field
To increase sensitivity
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
In FT-NMR, how are nuclei excited?
By radio-frequency radiation whose frequency is swept across a predetermined range
By an intense pulse of radiation which contains a wide range of frequencies
By an intense pressure
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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