BIOD 171 Module 3: Microbiology & Microscopy | Portage Learning Study Guide | Questions, Answers & Detailed Rationales

BIOD 171 x




Module 3: Microbiology & Microscopy | Portage Learning Study
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Guide | Questions, Answers & Detailed Rationales
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THIS STUDY RESOURCE INCLUDES
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• BIOD 171 Module 3 practice questions
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• Microbiology and microscopy review x x x




• Questions with answers and detailed rationales
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• Microbial structure and identification
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• Microscopy techniques and applications
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• Bacterial morphology
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• Microbial staining principles
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• Gram-positive and Gram-negative characteristicsx x x




• Microbial growth and environmental requirements
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• Temperature and microbial growth concepts
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• Laboratory methods and safety x x x




• Application-based practice questions x x




• Exam-focused review material x x

, BIOD 171 Module 3: Microbiology & Microscopy |
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Portage Learning Study Guide | Questions, Answers &
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Detailed Rationales
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1. What is the total magnification of a sample imaged with a 60x
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x objective and a 10x eyepiece? x x x x




• A) 60x x




• B) 70x x




• C) 600x x




• D) 10x x




Answer: C) 600x x x




Rationale: Total magnification is calculated by multiplying the
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magnification of the objective lens by the magnification of the eyepiece (60 x
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10 = 600).
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2. A cell that is adherent, flat, and unstained is easily identified using
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x bright field microscopy. x x




• A) True x




• B) Falsex




Answer: B) False x x




Rationale: Adherent, flat cells are almost invisible under bright field
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microscopy due to the limits of both resolution and contrast.
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3. Which of the following could be seen clearly by the unaided eye?
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