Microbiology Quiz1

63 Questions  I  By Dindiam

  
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1.  When humans manipulate the genes of microorganisms the process is called:
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E.
2.  Which of the following is not considered a microorganism?
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B.
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E.
3.  The study of the immune response to infection caused by microorganisms is         
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E.
4.  The microorganisms that recycle nutrients by breaking down dead matter and wastes are called:
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5.  The microorganisms that do not have a nucleus in their cells are called     
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6.  The Dutch merchant who made and used quality magnifying lenses to see and record microorganisms was         
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E.
7.  The surgeon who advocated using disinfectants on hands and in the air prior to surgery was         
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B.
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8.  The term sterile means free of all life forms.
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B.
9.  Microbes have been found existing in salty, acidic lakes.
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B.
10.  What discovery was crucial to the founding of the field of microbiology?  
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D.
11.  The English scientist Robert Hooke coined the term cell because the small boxes he saw in the microscope reminded him of a monk’s room.  What is the cell theory that was later proposed?
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12.  The first person to use a microscope to observe living cells was
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13.  The curve in Pasteur's swan neck flasks was important because
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14.  A pure culture refers to  
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15.  Disease causing agents account for about        _______    % of all microorganisms
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16.  Prions are infectious agents composed of
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17.  Bifidobacteria and Lactobacillus acidophillus are commonly used to produce
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18.  An extremophillic bacterium used in “Bioremediation” is
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D.
19.  Scientist that demonstrated that bacteria that spoiled food, beer and wine could be killed by short exposure to heat was
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20.  Aseptic technique was introduced by
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21.  Penicillin was discovered by
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22.  A solution of pH 7 compared to a solution of pH 9
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23.  A solution of pH 7 compared to a solution of pH 9
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24.  Organic chemicals have a basic framework of the element_________bonded to other atoms.
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25.  C6H12O6 + C6H12O6  à C12 H22O11 + H2O,  represents:
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26.  The building blocks of an enzyme are 
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27.  The Five I's of studying microorganisms include all of the following except
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28.  The term that refers to the purposeful addition of microorganisms into a laboratory nutrient medium is
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29.  A pure culture contains
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30.  The correct microbiological term for the tiny sample of specimen that is put ino a nutrient medium in order to produce a culture is the
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31.  Which of the following is essential for development of discrete, isolated colonies?   
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32.  Which of the following will result when 1% to 5% agar is added to nutrient broth, boiled and cooled?
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33.  Agar is an important component of media because
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34.  Which of the following is not an inoculating tool?
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35.  Agar is a complex polysaccharide that comes from a/an
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36.  A nutrient medium that has all of its chemical components identified and their precise concentrations known and reproducible, would be termed
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37.  Which type of medium is able to distinguish different species or types of microorganisms based on an observable change in the colonies or in the medium?
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38.  The _____ of the microscope holds and allows selection of the objective lenses.
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39.  Which of the following will converge light rays to a single focal point on the specimen?
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40.  Which of the following magnifies the specimen to produce the real image of the specimen?
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41.  Which of the following magnifies the specimen to produce the virtual image of the specimen?
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42.  Which of the following controls the amount of light entering the specimen?
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43.  If a microbiologist is studying a specimen at a total magnification of 950X, what is the magnifying power of the objective lens if the ocular lens is 10X?
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44.  Magnification is achieved in a compound microscope through the initial magnification of the specimen by the _____ lens. This image is then projected to the _____ lens that will further magnify the specimen to form a virtual image received by the eye.
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45.  Which of the following characteristics refers to the microscope's ability to show two separate entities as separate and distinct?
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46.  All of the following are diameters of cells that would be resolved in a microscope with a limit of resolution of 0.2µm except
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47.  The wavelength of light used and the numerical aperture governs
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48.  _____ has the same optical qualities as glass and thus prevents refractive loss of light as it passes from the slide to the objective lens.
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49.  Which type of microscope is the most widely used and shows cells against a bright background?
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50.  A confocal scanning optical microscope
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51.  A confocal scanning optical microscope
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52.  Which type of microscope does not use light in forming the specimen image?
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53.  Which type of microscope achieves the greatest resolution and highest magnification?
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54.  The purpose of staining cells on a microscope slide is to
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55.  The Gram staining procedure is best described as a __staining technique.
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56.  Helminths are
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57.  When you streak for isolation techique, in which quadrant do you expect to see isolated colonies?
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58.  A pure culture refers to
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59.  An example of a biological insecticide is 
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60.  The three physical forms of laboratory media are
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61.  A fat is called ________ if all carbons of the fatty acid chain are single bonded to 2 other carbons and 2 hydrogens.
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62.  Gelatin is not used commonly to prepare solid media because
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63.  What type of isolation technique learned in last week's laboratory is most effective to isolate pure cultures from mixed samples
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