OPENSTAX MICROBIOLOGY CHAPTER 2 TEST
PAPER QUESTIONS AND SOLUTIONS 100%
CORRECT FOR THE 2026 FINAL.
◍ Bacillis Anthracis. Ans: cells in cerebrospinal fluid (the rod
-
shaped bacterial cells are surrounded by
larger white blood cells)
◍ Darkfield Microscopy. Ans: Light objects are visible against a dark
background
Opaque disk placed in condenser
Only light reflected off the specimen enters the objective lens
◍ Borrelia burgdorferi
,. Ans: causes Lyme disease
◍ Wavelength. Ans: Distance from peak to peak of a wave
◍ Amplitude. Ans: Height of each peak or trough.
, ◍ Frequency. Ans: Number of wavelengths/unit time (Hertz -Hz).
Energy increases with frequency. Wavelength also decreases with
higher frequencies.
◍ Photons. Ans: Packet of light energy.
◍ Reflection. Ans: When a light wave bounces off of an object.
◍ Absorbance. Ans: When a light wave is captured by a material.
◍ Phosphorescence. Ans: When energy is absorbed and later re-
emitted.
◍ Transmission. Ans: Passage of a light wave through a material. A
material may allow more light to pass when it is thin or transparent.
◍ Transparency. Ans: Allowing more light to pass through
◍ Opacity. Ans: Allowing less light to pass through
◍ Interference. Ans: interaction between light waves; rock in pond
◍ Diffraction. Ans: Interaction between a light wave and an object -
bending or scattering the light.
PAPER QUESTIONS AND SOLUTIONS 100%
CORRECT FOR THE 2026 FINAL.
◍ Bacillis Anthracis. Ans: cells in cerebrospinal fluid (the rod
-
shaped bacterial cells are surrounded by
larger white blood cells)
◍ Darkfield Microscopy. Ans: Light objects are visible against a dark
background
Opaque disk placed in condenser
Only light reflected off the specimen enters the objective lens
◍ Borrelia burgdorferi
,. Ans: causes Lyme disease
◍ Wavelength. Ans: Distance from peak to peak of a wave
◍ Amplitude. Ans: Height of each peak or trough.
, ◍ Frequency. Ans: Number of wavelengths/unit time (Hertz -Hz).
Energy increases with frequency. Wavelength also decreases with
higher frequencies.
◍ Photons. Ans: Packet of light energy.
◍ Reflection. Ans: When a light wave bounces off of an object.
◍ Absorbance. Ans: When a light wave is captured by a material.
◍ Phosphorescence. Ans: When energy is absorbed and later re-
emitted.
◍ Transmission. Ans: Passage of a light wave through a material. A
material may allow more light to pass when it is thin or transparent.
◍ Transparency. Ans: Allowing more light to pass through
◍ Opacity. Ans: Allowing less light to pass through
◍ Interference. Ans: interaction between light waves; rock in pond
◍ Diffraction. Ans: Interaction between a light wave and an object -
bending or scattering the light.
