__________is probably the most important characteristic for classification of viruses in eukaryotes. Physical nature of virion constituents Morphology Host preference Chemical nature of virion constituents TRUE ANSWER : ? YOUR ANSWER : ?
Virulent and nonvirulent viruses may not inhibit host cell RNA synthesis degrade host cell DNA inhibit host cell DNA synthesis stimulate host cell macromolecule synthesis TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is the agent associated with the development of neurodegenerative disease in livestock and humans? Prions Viroids Virinos virions TRUE ANSWER : ? YOUR ANSWER : ?
The __________ of the influenza-enveloped virus appear to be involved in attachment to the host cell receptor site. flagellae fimbriae hemagluttinin neuraminidase TRUE ANSWER : ? YOUR ANSWER : ?
Intracellular structures formed during many viral infections, called __________ , which can directly disrupt cell structure. cytocidal bodies chromosomal disruptions prokaryotes inclusion bodies TRUE ANSWER : ? YOUR ANSWER : ?
Viroids are composed of double-stranded DNA single-stranded RNA double-stranded RNA single-stranded DNA TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following has been linked to Kaposi's sarcoma? Human herpes virus 8 Human T-cell lymphotropic virus Epstein-Barr virus Human papilloma virus TRUE ANSWER : ? YOUR ANSWER : ?
Which family has received most interest in their development as a biological control agent against insects? Baculoviridae Reoviridae Iridoviridae Poxviridae TRUE ANSWER : ? YOUR ANSWER : ?
In cancer, the reversion of cells to a more primitive or less differentiated state is called anaplasia metastasis oncogenic neoplasia TRUE ANSWER : ? YOUR ANSWER : ?
The hepadnaviruses such as hepatitis B virus are quite different from other DNA viruses with respect to genome replication. These replicate their DNA using DNA-dependent DNA polymerase reverse transcriptase DNA ligase Rnase H TRUE ANSWER : ? YOUR ANSWER : ?