Diagnosis of viral infections sometimes involves

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Chapter006

52 .   Viral growth in bird embryos can cause discrete , opaque spots in the embryonic membranes called
A. Lysogen y
B. Buddin g
C. Plaque s
D. Cytopathic effects
E. Pock s
Answer:  E .   Pock s
53 .   Cells grown in culture form a ( n )
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54 .   Diagnosis of viral infections sometimes involves analyzing the patient 's blood for specific _____ that the immune system produced against the virus .
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55 .   Freshly isolated animal tissue that is placed in a growth medium and allowed to produce a cell monolayer is referred to as a _____ cell culture .
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56 .   A common method for cultivating viruses in the lab is to use in vitro systems called _____ cultures .
A. Embry o
B. Cel l
C. Plaqu e
D. Bacteriopha ge
E. Eg g
Answer:  B .   Cel l
57 .   Infectious protein particles are called
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58 .   Infectious naked strands of RNA that affect plants are called
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59 .   Creutzfeld - Jacob disease is
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60 .   Satellite viruses are
A. Also called viroids
B. Dependent on other viruses for replication
C. The cause of spongiform encephalopathies
D. Significant pathogens of plants
E. All of the choices are correct
Answer:  B.   Dependent on other viruses for replication
61 .   Two noncellular agents , smaller than viruses , are the infectious proteins called _____ and the infectious RNA strands called _____.
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62 .   Who developed a rabies vaccine by separating bacteria from virus using a filter ?
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63 .   The primary purposes of viral cultivation are :
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64 .   When a virus enters a host cell , the viral genes redirect the genetic and metabolic activities of the host cell .
 True
 False
Answer:  a .   True
65 .   Viruses are used to produce vaccines for prevention of certain viral infections .
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66 .   Viruses are ultramicroscopic because they range in size from 2 mm to 450 mm .
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67 .   A fully formed virus that can cause an infection in a host cell is called a virion .
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68 .   Spikes are glycoproteins of the virus capsid .
 True
 False
Answer:  A )   True
69 .   Each virus is assigned to genus status based on its host , target tissue and type of disease it causes .
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70 .   A specific animal virus has the ability to attach to and enter almost any animal host cell .
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71 .   Viral spikes are inserted into the host cell membrane before budding or exocytosis .
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72 .   Prophages can be activated into viral replication and enter the lytic cycle .
 True
 False
Answer:  a .   True
73 .   Bacteriophages do not undergo adsorption to specific host cell receptors prior to penetration .
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74 .   Viruses are the most common cause of acute infections that do not result in hospitalization .
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75 .   The adeno - associated virus ( AAV ) and the delta agent are prions .
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76 .   Viruses are simple , non-cellular and lack m RNA .
 True
 False
Answer:     True
77 .   Viruses mutate and some have not been discovered .
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78 .   Viruses are not filterable .
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79 .   Viruses are unable to multiple outside of a host cell .
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54. Diagnosis of viral infections sometimes involves analyzing the patient's blood for specific _____ that the immune system produced against the virus. A. GlycoproteinsB. AntibodiesC. Complement proteinsD. AntigensE. None of the choices are correct
55. Freshly isolated animal tissue that is placed in a growth medium and allowed to produce a cell monolayer is referred to as a _____ cell culture.
56. A common method for cultivating viruses in the lab is to use in vitro systems called _____ cultures.
57. Infectious protein particles are called
58. Infectious naked strands of RNA that affect plants are called A. ViroidsB. PhagesC. PrionsD. Oncogenic virusesE. Spikes
59. Creutzfeld-Jacob disease is
60. Satellite viruses are
61. Two noncellular agents, smaller than viruses, are the infectious proteins called _____ and the infectious RNA strands called _____.
62. Who developed a rabies vaccine by separating bacteria from virus using a filter? A. LeewonhoekB. KochC. PasteurD. Cohn
63. The primary purposes of viral cultivation are:
True / False Questions64. When a virus enters a host cell, the viral genes redirect the genetic and metabolic activities of the host cell.
65. Viruses are used to produce vaccines for prevention of certain viral infections.
66. Viruses are ultramicroscopic because they range in size from 2 mm to 450 mm. True False
67. A fully formed virus that can cause an infection in a host cell is called a virion.
68. Spikes are glycoproteins of the virus capsid.
69. Each virus is assigned to genus status based on its host, target tissue and type of disease it causes.
70. A specific animal virus has the ability to attach to and enter almost any animal host cell. True False
71. Viral spikes are inserted into the host cell membrane before budding or exocytosis.
72. Prophages can be activated into viral replication and enter the lytic cycle.
73. Bacteriophages do not undergo adsorption to specific host cell receptors prior to penetration.
74. Viruses are the most common cause of acute infections that do not result in hospitalization. True False
75. The adeno-associated virus (AAV) and the delta agent are prions.
76. Viruses are simple, non-cellular and lack mRNA.
77. Viruses mutate and some have not been discovered.
78. Viruses are not filterable. True False
79. Viruses are unable to multiple outside of a host cell.

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