Clinical Chemistry I ASCP Review – Accurate
Answers To All Questions
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Terms in this set (467)
Which of the following A most common light source for photometry in the
lamps provides a visible region. continuous spectrum (360-800 nm). near
continuous spectrum of IR and UV.
radiant energy in the
visible, near IR, and near Hydrogen and Deuterium (200-375 nm)
UV regions of the Mercury vapor- not a continuous spectrum, emitting
spectrum? radiation at specific wavelengths
A. Tungsten-filament
B. Hydrogen
C. Deuterium
D. Mercury vapor
Which of the following B Use for selecting a narrow band wavelengths from a
isolates light continuous spectrum. Three kinds (prisms, filters,
within a narrow region of diffraction gratings.
the spectrum?
A. Photomultiplier tube
B. Monochromator
C. Photovoltaic cell
D. Detector
Which of the following is C
not descriptive of a PMT- responds to the radiant energy light it absorbs by
photomultiplier tube? emitting electrons in a proportional amount to the initial
A. Emits electrons light absorbed.
proportionally to
initial light absorbed
B. Must be shielded from
stray light
C. Cannot be used with a
chopper
D. Amplifies the initial signal
received
,Which of the following is D is part of a barrier layer cell
false about PMT- 1. light to electricity
a photomultiplier tube? 2. Amplification
A. Converts radiant energy
(light)
to electrical energy
(current)
B. Amplifies the current
significantly
C. Has a very rapid
response time
D. Is composed of an iron
plate and
a layer of selenium
5. Which type of D
photodetector employs a 256-2048 arranged in a linear fashion
linear arrangement that Respond to a specific wavelength that results in a
allows it to respond to a continuous UV/ visible spectrum.
specific wavelength
resulting in complete
UV/visible spectrum
analysis?
A. Photomultiplier tube
B. Phototube
C. Barrier layer cell
D. Photodiode array
When performing D
spectrophotometer
quality assurance checks,
what is the
holmium oxide glass filter
used to assess?
A. Linearity
B. Stray light
C. Absorbance accuracy
D. Wavelength accuracy
,In spectrophotometric D
analysis, what is the
purpose of the reagent
blank?
A. Correct for interfering
chromogens
B. Correct for lipemia
C. Correct for protein
D. Correct for color
contribution of the
reagents
In regard to bichromatic A
analysis, which of the
following is false?
A. Absorbance is measured
at the
spectral absorbance peak
for a blank
and the sample using the
same
wavelength.
B. Eliminates background
interferences
C. Sample concentration
determined
from difference in two
measured
absorbances
D. Functions as a reference
blank for
each sample
, The bandpass of a C
spectrophotometer is 540 +/- 5nm (10nm)
10 nm. If an instalment is set
at 540 nm, the wavelengths
that are permitted to
impinge on the sample will
be within what
wavelength range?
A. 530-540 nm
B. 530-550 nm
C. 535-545 nm
D. 540-550 nm
Which of the following A
formulas is an
expression of the Beer-
Lambert law that is
routinely applied to
spectrophotometric
analysis?
A. A u X C s/As = C u
B. C u X C s/As= A u
C. A s X C s/C u = A u
D. A = 2 - log %T
1 1 . In spectrophotometry, C
which of the following is a
mathematical expression of
the relationship between
absorbance and
transmittance?
A. A — abc
R A u/ C u = A s/C s
C. A = 2 - log %T
D. A = log %T
Answers To All Questions
Save
Terms in this set (467)
Which of the following A most common light source for photometry in the
lamps provides a visible region. continuous spectrum (360-800 nm). near
continuous spectrum of IR and UV.
radiant energy in the
visible, near IR, and near Hydrogen and Deuterium (200-375 nm)
UV regions of the Mercury vapor- not a continuous spectrum, emitting
spectrum? radiation at specific wavelengths
A. Tungsten-filament
B. Hydrogen
C. Deuterium
D. Mercury vapor
Which of the following B Use for selecting a narrow band wavelengths from a
isolates light continuous spectrum. Three kinds (prisms, filters,
within a narrow region of diffraction gratings.
the spectrum?
A. Photomultiplier tube
B. Monochromator
C. Photovoltaic cell
D. Detector
Which of the following is C
not descriptive of a PMT- responds to the radiant energy light it absorbs by
photomultiplier tube? emitting electrons in a proportional amount to the initial
A. Emits electrons light absorbed.
proportionally to
initial light absorbed
B. Must be shielded from
stray light
C. Cannot be used with a
chopper
D. Amplifies the initial signal
received
,Which of the following is D is part of a barrier layer cell
false about PMT- 1. light to electricity
a photomultiplier tube? 2. Amplification
A. Converts radiant energy
(light)
to electrical energy
(current)
B. Amplifies the current
significantly
C. Has a very rapid
response time
D. Is composed of an iron
plate and
a layer of selenium
5. Which type of D
photodetector employs a 256-2048 arranged in a linear fashion
linear arrangement that Respond to a specific wavelength that results in a
allows it to respond to a continuous UV/ visible spectrum.
specific wavelength
resulting in complete
UV/visible spectrum
analysis?
A. Photomultiplier tube
B. Phototube
C. Barrier layer cell
D. Photodiode array
When performing D
spectrophotometer
quality assurance checks,
what is the
holmium oxide glass filter
used to assess?
A. Linearity
B. Stray light
C. Absorbance accuracy
D. Wavelength accuracy
,In spectrophotometric D
analysis, what is the
purpose of the reagent
blank?
A. Correct for interfering
chromogens
B. Correct for lipemia
C. Correct for protein
D. Correct for color
contribution of the
reagents
In regard to bichromatic A
analysis, which of the
following is false?
A. Absorbance is measured
at the
spectral absorbance peak
for a blank
and the sample using the
same
wavelength.
B. Eliminates background
interferences
C. Sample concentration
determined
from difference in two
measured
absorbances
D. Functions as a reference
blank for
each sample
, The bandpass of a C
spectrophotometer is 540 +/- 5nm (10nm)
10 nm. If an instalment is set
at 540 nm, the wavelengths
that are permitted to
impinge on the sample will
be within what
wavelength range?
A. 530-540 nm
B. 530-550 nm
C. 535-545 nm
D. 540-550 nm
Which of the following A
formulas is an
expression of the Beer-
Lambert law that is
routinely applied to
spectrophotometric
analysis?
A. A u X C s/As = C u
B. C u X C s/As= A u
C. A s X C s/C u = A u
D. A = 2 - log %T
1 1 . In spectrophotometry, C
which of the following is a
mathematical expression of
the relationship between
absorbance and
transmittance?
A. A — abc
R A u/ C u = A s/C s
C. A = 2 - log %T
D. A = log %T
