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Multiple Choice Quiz
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Analytical Plant Anatomy
Multiple Choice Quiz
1
Liquid nitrogen is a poor freezing agent for microscopy since it:
A)
is not colder than ice of water.
B)
readily forms a vapor upon contact with warm substances.
C)
has a high temperature range between its freezing and boiling points.
D)
freezes too rapidly.
E)
does not form ice crystals.
2
A radiograph utilizes an internal radiation source.
A)
True
B)
False
3
Delesse conceived that the area of a substance within a larger area is equivalent to the ____ within a larger volume.
A)
surface density
B)
absolute area
C)
relative area
D)
volume
E)
mass
4
Continuous X-rays indicate:
A)
mass of a specimen bombarded with an electron beam.
B)
elemental composition.
C)
fluorescence.
D)
compound composition.
E)
specific X-ray photons of a given substance.
5
Markers for enzyme activity viewed with electron microscopy are always:
A)
fluorescence signals.
B)
photographic grains.
C)
precipitates.
D)
specific colors.
E)
electron transparent.
6
A liquid photographic emulsion is used for electron microscopy autoradiography.
A)
True
B)
False
7
The quantification of structure from sectional planes is termed:
A)
reconstruction.
B)
physical preservation.
C)
microanalysis.
D)
localization.
E)
morphometry.
8
A K-alpha X-ray is generated by loss of energy of an electron from:
A)
a K shell.
B)
an L shell.
C)
an M shell.
D)
an N shell.
E)
the nucleus.
9
In energy-dispersive X-ray microanalysis, the
background
radiation is formed from:
A)
characteristic X-rays.
B)
continuous X-rays.
C)
electron beam electrons.
D)
chemical interactions.
E)
visible light photons.
10
Water films frozen so quickly that they do not become crystalline are said to be:
A)
surface tension.
B)
cubic.
C)
vitreous.
D)
sectioned.
E)
fractured.
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