Microbiology: An Introduction (13th Edition)
Microbiology: An Introduction (13th Edition)
13th Edition
ISBN: 9780134605180
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case, Derek Weber, Warner Bair
Publisher: PEARSON
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Chapter 3, Problem 7MCQ

Assume you stain Clostridium by applying a basic stain, carbolfuchsin, with heat, decolorizing with acid-alcohol, and counterstaining with an acidic stain, nigrosin. Through the microscope, the endospores are _____1______, and the cells are stained ___2____ .

  1. 1. 1—red: 2—black
  2. 2. 1—black: 2—colorless
  3. 3. 1—colorless: 2—black
  4. 4. 1—red: 2—colorless
  5. 5. 1—black: 2—red
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Which parts of the modern microscope do you think were absent from Leeuwenhoek’s microscope? Why is it necessary to calibrate the ocular micrometer with each objective?  When measuring dimensions of microorganisms, what slide preparation should be used and why? Complete the following for each objective in your microscope:   _____ Ocular micrometer divisions = _________ stage micrometer divisions _____ Ocular micrometer divisions = _________1 stage micrometer division = _____mm                                 Microscopic Measurements 1 Arrange the following items by using numbers (smallest) to 8 (largest).                                     ______ AIDS virus                                ______ rickettsia                                     ______ worm                                     ______ white blood cell (WBC)                                     ______ amoeba                                   ______ protein                                     ______ staphylococci…
Choose the dyes or reagents used in the Endospore stain. (More than one choices are correct)   a acid alcohol    b crystal violet   c carbolfuschin   d malachite green    e safranin   f iodine   g alcohol   h methylene blue
How is the India ink capsule stain an example of a negative stain?
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