Bio 2010 - Microbiology » Spring 2023 » Chapter 4 Quiz
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Question #1
Which of the following is used to visualize live cells?
A.
Phase Contrast
B.
SEM
C.
All of These
D.
TEM
Question #2
A compound light microscope allows clear visualization of objects no smaller than a:
A.
typical virus
B.
small bacterium
C.
four leaf clover
D.
DNA molecule
E.
human cell
Question #3
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 have longer wavelengths than light waves
B.
Electrons have shorter wavelengths than light waves
C.
Electrons are less invasive
D.
Light waves are less visible.
E.
Electrons do not penetrate the sample.
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 filters in the objective to give contrast to parts of the cell with different thicknesses
C.
Uses special lenses to distinguish between solid and liquid phases of the cell
D.
Uses special lenses to change the color of light passing through them.
Question #5
Light of ____ wavelength typically will result in ____ resolving power.
A.
any, poor
B.
longer, better
C.
shorter, worse
D.
shorter, better
Question #6
The kind of electron microscope which is used to study internal structure of cells is:
A.
scanning electron microscope
B.
light microscope
C.
transmission electron microscope
D.
compound microscope
Question #7
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.
phase contrast
B.
fluorescent
C.
darkfield
D.
scanning electron
Question #8
Which of the following microscope types has the best contrast?
A.
differential interference contrast (DIC)
B.
phase contrast
C.
bright field miscroscopy
D.
dark field miscroscopy
Question #9
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.
bright field microscopy
B.
fluorescent microscopy
C.
dark field microscopy
D.
electron microscopy
E.
phase contrast microsocpy
Question #10
Which of the following has the BEST resolution?
A.
Phase contrast
B.
none of these
C.
dark field microscopy
D.
bright field microscopy
E.
differential interference contrast (DIC)
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