OpenStax Microbiology Test Bank- questions and answersChapter 2: How We See the Invisible World

OpenStax Microbiology Test Bank- questions and answersChapter 2: How We See the Invisible World
Chapter 2: How We See the Invisible World
* = Correct answer
Multiple Choice
1. Which term is used to refer to a wave’s rate of vibration?
A. amplitude
B. frequency*
C. trough
D. wavelength
Difficulty: Easy
ASM Standard: N/A
2. On the figure, which letter represents a refracted ray of light?
A. A
B. B
C. C
D. D*
Difficulty: Easy
ASM Standard: N/A
3. On the electromagnetic spectrum, which type of wave has the shortest wavelength?
A. cosmic ray*
B. infrared ray
C. ultraviolet ray
D. visible light
Difficulty: Moderate
ASM Standard: N/A
4. Dyes are often used during microscopy to increase which of the following?
A. contrast*
B. magnification
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OpenStax Microbiology Test Bank- questions and
answersChapter 2: How We See the Invisible World
C. motility
D. resolution
Difficulty: Easy
ASM Standard: 32
5. Which of the following was the first to use the term “cells”?
A. Robert Hooke*
B. Robert Koch
C. Carolus Linnaeus
D. Antonie van Leeuwenhoek
Difficulty: Easy
ASM Standard: N/A
6. Which of the following is the typical magnification of an object viewed using a 10× ocular
lens and a 100× objective lens on a brightfield microscope?
A. 1×
B. 10×
C. 100×
D. 1000×*
Difficulty: Moderate
ASM Standard: 32
7. Most modern microscopes have two eyepieces, meaning that they are which of the
following?
A. binocular*
B. monocular
C. oil immersion
D. trinocular
Difficulty: Easy
ASM Standard: 32
8. An annular stop is used for which type of microscopy?
A. confocal
B. darkfield
C. fluorescence
D. phase contrast*
Difficulty: Easy
ASM Standard: 32
9. Which of the following is the specific name for a stain that colors the background but not the
specimen?
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OpenStax Microbiology Test Bank- questions and
answersChapter 2: How We See the Invisible World
A. acid-fast stain
B. counterstain
C. differential stain
D. negative stain*
Difficulty: Easy
ASM Standard: 32
10. Which type of microscopy would work best for viewing internal cell structures?
A. atomic force microscopy
B. scanning electron microscopy
C. scanning tunneling microscopy
D. transmission electron microscopy*
Difficulty: Moderate
ASM Standard: 32
11. The Gram-staining procedure is best described as which of the following?
A. complex staining
B. differential staining*
C. negative staining
D. simple staining
Difficulty: Easy
ASM Standard: 32

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