Bio 2010 - Microbiology » Fall 2021 » Chapter 4 Quiz
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Question #1
Light of ____ wavelength typically will result in ____ resolving power.
A.
longer, better
B.
shorter, better
C.
shorter, worse
D.
any, poor
Question #2
Which of the following is used to visualize live cells?
A.
SEM
B.
Phase Contrast
C.
All of These
D.
TEM
Question #3
You want to determine the location of a specific protein in a cell, using a color stain. Which of the following is the BEST type of microscopy to use?
A.
electron microscopy
B.
phase contrast microsocpy
C.
fluorescent microscopy
D.
bright field microscopy
Question #4
Phase Contrast microscopy is different than bright field microscopy because:
A.
Continuously changes the phase of the incident light from the condenser to improve contrast in the specimen.
B.
Uses special lenses to distinguish between solid and liquid phases of the cell
C.
Uses filters in the objective to give contrast to parts of the cell with different thicknesses
D.
Uses special lenses to change the color of light passing through them.
Question #5
A microscope that exposes specimens to ultraviolet light and forms an image with the light emitted at a different wavelength is called a __________ microscope.
A.
fluorescent
B.
phase contrast
C.
darkfield
D.
scanning electron
Question #6
Which of the following has the BEST resolution?
A.
differential interference contrast (DIC)
B.
Phase contrast
C.
bright field microscopy
D.
dark field microscopy
E.
none of the above
Question #7
The transmission electron microscope has the greatest resolving power because it uses an electron beam to view the sample instead of a light beam. The electron beam is used because:
A.
Electrons do not penetrate the sample.
B.
Electrons have shorter wavelengths than light waves
C.
Electrons have longer wavelengths than light waves
D.
Light waves are less visible.
E.
Electrons are less invasive
Question #8
Which of the following microscope types has the best contrast?
A.
bright field miscroscopy
B.
dark field miscroscopy
C.
phase contrast
D.
differential interference contrast (DIC)
Question #9
A compound light microscope allows clear visualization of objects no smaller than a:
A.
DNA molecule
B.
small bacterium
C.
four leaf clover
D.
human cell
E.
typical virus
Question #10
The kind of electron microscope which is used to study internal structure of cells is:
A.
compound microscope
B.
scanning electron microscope
C.
light microscope
D.
transmission electron microscope
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