Microbiology Module 3

108 Questions  I  By Ucardiel

  
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1.  The source of variation among microoragnism is
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B.
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D.
2.  The properties of a cell which are determined by ita DNA composition are its
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D.
3.  Which would have the least effect on the amino acid sequence?
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4.  Segments of DNA capable of moving from one area in the DNA to another are called
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5.  Transposons
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6.  Chemical mutagens often act by altering the
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7.  The largest group of chemical mutagens consists of
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8.  Nitrous acid most often frequently causes mutations by
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9.  Irradiation of cells with ultraviolet light may cause
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10.  The formation of a covalent bond between two adjacent thymines is caused by
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D.
11.  X-rays
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12.  DNA repair mechanisms occur
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13.  Which is not true about mismatch repair?
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14.  Mutations
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15.  Prokaryotic cell mutations can be observed very quickly because the prokaryotic chromosome is
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16.  The diploid character of euakryotic cells may mask the appearance of a mutation since
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17.  Direct selection involves inoculating cells onto growth media on which
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18.  Among the easiest of the mutations to isolate are those which
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19.  Bacteria that have the properties of both the donor and recipient cells are the result of
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20.  The mechanism by which genes are transferred into bacteria via viruses is called
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21.  In conjugation the donor cell is recognized by the presence of
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22.  The F plamid carries the information for
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23.  Competent cells
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24.  The material responsible for transformation was shown to be DNA by
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25.  In conjugation,transformation, or transduction, the recipient bacteria will take donor DNA
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26.  Gene tranfer that requires cell-to-cell contact is
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27.  Which is not true about a crown gall tumor?
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28.  The study of the crown gall tumor found
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29.  An early attempt by Cohn at bacterial classification grouped bacteria according to their
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30.  In 1908 Orla-Jensen suggested that bacteria be grouped according to their
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31.  In the 1930's Kluyver and van Niel proposed a classification scheme based on
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32.  In 1970 Stanier proposed that classification be based on
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33.  Woese
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34.  Which technique(s) is/are used to help identify and classify bacteria?
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35.  From most general to most specific, which is the correct order?
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36.  The basic taxonomic unit in the classification scheme of all living things is
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37.  The three domain classification scheme uses
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38.  The name Lactococcus (Streptococcus) lactis
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39.  Very often clinically relevant information examining may be obtained by
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40.  Gram-positive encapsulated diplococci found in sputum is indicative of
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41.  Intracellular Gram-negative diplococci found in a urethral sample from a male is indicative of
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D.
42.  Mycobacterium tuberculosis is one of the few species of bacteria that
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43.  A selective growth medium
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44.  Streptococcus pyogenes would be
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45.  Media that changes color as a result of the biochemical activity of growing bacteria
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46.  A breath test assaying for radioactive carbon dioxide may be used to indicate the presence of
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D.
47.  APITM, EnterotubeTM and VitekTM are all
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48.  Serological methods
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49.  Nucleic acid techniques have great power as diagnostic tools because they may
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50.  DNA probes have been very useful in
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51.  Organisms that grow very slowly, are non-culturable, are present in very small numbers or are mixed with a number of other bacteria may still be identified using
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52.  Which of the rRNA molecules has proven the most useful in taxonomy/identification?
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53.  Two isolates with identical RFLPs are considered
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54.  Strain differences are helpful in
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55.  Various strains of E. coli
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56.  E. coli 0157:H7
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57.  In E. coli O157:H7, the O157:H7 refers to the
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58.  Phenotypically identical bacteria
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59.  Phage typing
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60.  In higher organisms, successful mating can occur between members of the same
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61.  The more closely related two organisms are,
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62.  The point at which two organisms diverged from a common ancestor
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63.  Modern approaches to evolutionary taxonomy often involve
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64.  If the GC content of two organisms is 45% in both
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65.  A DNA similarity of 75% between two organisms
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66.  To study the phylogeny of eukaryotes
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67.  Sequencing of rRNA is useful for
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68.  The reference for taxonomic descriptions of bacteria is
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69.  Single-celled eukaryotic organisms that lack chlorophyll are called
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70.  Protozoan classification is based on their means of
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71.  Sarcodina move by means of
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72.  Protozoans are an important part of the food chain ingesting large numbers of
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73.  The ability to exist as either a trophozoite or a cyst is characteristic of many
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74.  Schizogony
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75.  One of the greatest causes of human deaths through time has been due to
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76.  Most fungi are
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77.  Fungi are particularly adept at infecting
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78.  The return of carbon dioxide to the atmosphere and nitrogen to the soil is due to the action of
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79.  All fungi have ______ in their cell walls
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80.  Fungi are classified according to their
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81.  The group of Fungi in which sexual reproduction has not been observed is
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82.  Deuteromycetes has been further classified using
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83.  The terms yeast, mold, and mushrooms refers to fungal
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84.  A tangle of fungal hyphae is generally known as a
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85.  Dimorphic fungi
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86.  Fungal spores are a major cause of
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87.  The pH at which most fungi thrive is
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88.  Fungi capable of dimorphism grow either as
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89.  Fungal diseases are generally referred to as
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90.  The most necessary habitat requirement of protozoa is
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91.  Aflatoxins
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92.  Coccidiomycosis is
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93.  Lichens may be an association of
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94.  Mycorrhizas
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95.  Convergent evolution
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96.  When cellular slime molds run out of food, they form a
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97.  Lyme disease is transmitted by
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98.  Pediculus humanus
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99.  Lice and mites
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100.  Nematodes
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101.  Tapeworms
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102.  Which are not arthropods?
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103.  Sarcoptes scabiei
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104.  Fleas
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105.  Haustoria
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106.  Plant pathology grew in importance as a field of study after it was shown that the Irish potato blight was caused by
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107.  Fungi that are important for fermentation of fruits
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108.  Fungi are important in
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