Microbiologu
Microbiology Quizzes
Chapter 4
1. In the Gram stain, safranin serves as the * Primary Stain * Mordant * Decolorizing agent * Counter stain
2. *If you wanted to determine if a microorganism fermented a particular carbo * Biochemical tests * Morphology * Serology * Phage typing
3. What part of the name Mycobacterium tuberculosis is the species? * Mycobacterium * Tuberculosis * The entire name * None of it
4. The limit of useful magnification for a light microscope is * 100x * 1000x * 2000x * 10,000x
5. In a light microscope, the high-power objective lens has a greater magnification than the oil immersion lens. * True * false
6. Which of the following type of microscopes should be used to view a specimen at 50,000 magnification? * A transmission electron microscope * A confocal microscope * A phase-contrast microscope * A dark-field microscope
7. In a Linnasean taxonomic scheme, closely related genera are placed in a larger grouping called the * Phylum * Class * Species * Family
8. What is the purpose of fixation in smear preparation? * It keeps cells from drying out during staining. * It attaches cells firmly to the slide’s surface. * It enables cells to take up more stain. * It temporarily keeps cells from growing.
9. Which of the following is a true statement concerning basic dyes? * Eosin is an example of a basic dye. * Basic dyes are also known as anionic chromophores. * Basic dyes work best at a low pH * Basic dyes are attracted to the negatively charged surface of cells.
10. All of the following are components of a bright-field compound microscope EXCEPT * The scanning objective lens * The condenser lens * The phase plate * The oil-immersion objective lens
Chapter 6
A bacterial species has been determined to have a generation time of 30
Chapter 4
1. In the Gram stain, safranin serves as the * Primary Stain * Mordant * Decolorizing agent * Counter stain
2. *If you wanted to determine if a microorganism fermented a particular carbo * Biochemical tests * Morphology * Serology * Phage typing
3. What part of the name Mycobacterium tuberculosis is the species? * Mycobacterium * Tuberculosis * The entire name * None of it
4. The limit of useful magnification for a light microscope is * 100x * 1000x * 2000x * 10,000x
5. In a light microscope, the high-power objective lens has a greater magnification than the oil immersion lens. * True * false
6. Which of the following type of microscopes should be used to view a specimen at 50,000 magnification? * A transmission electron microscope * A confocal microscope * A phase-contrast microscope * A dark-field microscope
7. In a Linnasean taxonomic scheme, closely related genera are placed in a larger grouping called the * Phylum * Class * Species * Family
8. What is the purpose of fixation in smear preparation? * It keeps cells from drying out during staining. * It attaches cells firmly to the slide’s surface. * It enables cells to take up more stain. * It temporarily keeps cells from growing.
9. Which of the following is a true statement concerning basic dyes? * Eosin is an example of a basic dye. * Basic dyes are also known as anionic chromophores. * Basic dyes work best at a low pH * Basic dyes are attracted to the negatively charged surface of cells.
10. All of the following are components of a bright-field compound microscope EXCEPT * The scanning objective lens * The condenser lens * The phase plate * The oil-immersion objective lens
Chapter 6
A bacterial species has been determined to have a generation time of 30