1. Which of the following is the agent associated with the development of neurodegenerative disease in livestock and humans?
A.Prions
B.Viroids
C.virions
D.Virinos

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2.  __________is probably the most important characteristic for classification of viruses in eukaryotes.
A.Host preference
B.Morphology
C.Physical nature of virion constituents
D.Chemical nature of virion constituents

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3. The __________ of the influenza-enveloped virus appear to be involved in attachment to the host cell receptor site.
A.fimbriae
B.flagellae
C.hemagluttinin
D.neuraminidase

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4. Intracellular structures formed during many viral infections, called __________ , which can directly disrupt cell structure.
A.prokaryotes
B.chromosomal disruptions
C.inclusion bodies
D.cytocidal bodies

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5. Viral RNA is replicated in the host cell
A.cytoplasmic matrix
B.nucleus
C.mitochondria
D.lysozomes

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6. Which family has received most interest in their development as a biological control agent against insects?
A.Reoviridae
B.Baculoviridae
C.Iridoviridae
D.Poxviridae

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7. In cancer, the reversion of cells to a more primitive or less differentiated state is called
A.neoplasia
B.anaplasia
C.metastasis
D.oncogenic

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