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.