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MLS 220 Exam 3 Questions and Answers (CHEM ANALYTICAL)

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MLS 220 Exam 3 Questions and Answers (CHEM ANALYTICAL) MLS 220 Exam 3 Questions and Answers (CHEM ANALYTICAL) MLS 220 Exam 3 Questions and Answers (CHEM ANALYTICAL)

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  • November 10, 2023
  • 46
  • 2023/2024
  • Exam (elaborations)
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MLS 220 Exam 3 Questions and Answers (CHEM
ANALYTICAL)



Which of the following describes an assay in which the amount of an
analyte present is determined?


a. Manual
b. Qualitative
c. Automated
d. Quantitative - ANSWER-d. Quantitative


A benefit of automated instrumentation in the clinical laboratory is:


a. Smaller sample size requirements


b. Increased precision and accuracy


c. Faster turnaround time


d.All of the above - ANSWER-d.All of the aboveLight travels in:


Light travels in:


a. Planes

, MLS 220 Exam 3 Questions and Answers (CHEM
ANALYTICAL)

b. Waves
c. Flashes
d. Lasers - ANSWER-b. Waves


Which wavelengths describe visible light:


a. ~260 - 600 nm
b. ~500 - 900 nm
c. ~380 - 700 nm
d. ~400 - 940nm - ANSWER-c. ~380 - 700 nm


If the color of an object is red, the other colors of the energy spectrum
(orange, yellow, green, blue, purple, etc.) are:


a. Absorbed
b. Deflected
c. Expressed
d. Transmitted - ANSWER-a. Absorbed


In Plank's equation, what do E and γrepresent, and how do they relate to
each other?
a. E = Energy, γ = Frequency; Directly Proportional

, MLS 220 Exam 3 Questions and Answers (CHEM
ANALYTICAL)



b. E = Energy, γ = Wavelength; Inversely Proportional


c. E = Energy, γ = Frequency; Inversely Proportional


d. E = Energy, γ = Wavelength; Directly Proportional - ANSWER-b. E
= Energy, γ = Wavelength; Inversely Proportional


According to Beer's law, the amount of light __________ by a solution
is ___________ proportional to the ___________ of a solution:


a. transmitted ; directly ; concentration


b. transmitted ; inversely ; concentration


c. absorbed ; directly ; concentration


d. absorbed ; inversely ; concentration - ANSWER-c. absorbed ; directly
; concentration


The measurement of light at selected wavelengths, typically in the
ranges of ultraviolet (UV), visible, and infrared light, is known as:

, MLS 220 Exam 3 Questions and Answers (CHEM
ANALYTICAL)

a. Photometry
b. Refractometry
c. Luminometry
d. Spectrophotometry - ANSWER-d. Spectrophotometry


The component of the spectrophotometer that isolates radiant energy of
a desired wavelength while excluding other unwanted wavelengths is
known as the:


a. Monochromator
b. Light Source
c. Cuvette
d. Photodetector - ANSWER-a. Monochromator


The analytical method based on detection of the portion of light
scattered by the particles in a solution toward a detector not in the direct
path of the transmitted light is known as:


a. Turbidimetry
b. Absorbance Spectrophotometry
c. Refractometry
d. Nephelometry - ANSWER-d. Nephelometry

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