Ft Ir Spectroscopy

Question: Negative staining is a technique used in
[A].

electron microscopy

[B].

gel electrophoresis

[C].

immunocytochemistry

[D].

light microscopy

Answer: Option A

Explanation:

No answer description available for this question.

Question: Cytochrome C has an isoelectric pH of
[A].

8.5

[B].

10.05

[C].

7.5

[D].

11.05

Answer: Option B

Explanation:

No answer description available for this question.

Question: In scanning electron microscopy
[A].

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

[B].

a specimen is fixed and then coated with transition metal

[C].

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

[D].

none of the above

Answer: Option A

Explanation:

No answer description available for this question.

Question: In immunofluroscence microscopy, fluroscent compounds are attached to
[A].

an antibody specific for the subcellular structure

[B].

an antigen specific for the subcellular structure

[C].

bound antibody specific for the subcellular structure

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Why is it advantageous to record many FID signals from the same sample and then add them together?
[A].

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

[B].

To remove inaccuracies caused by fluctuations in the applied magnetic field

[C].

To increase sensitivity

[D].

None of the above

Answer: Option C

Explanation:

No answer description available for this question.

Question: In FT-NMR, how are nuclei excited?
[A].

By radio-frequency radiation whose frequency is swept across a predetermined range

[B].

By an intense pulse of radiation which contains a wide range of frequencies

[C].

By an intense pressure

[D].

None of the above

Answer: Option A

Explanation:

No answer description available for this question.

Question: An FT-IR instrument record a signal in the
[A].

time domain

[B].

frequency domain

[C].

both (a) and (b)

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.