1. The _____ of the influenza-enveloped virus appear to be involved in attachment to the host cell receptor site
Pili- Fimbriae- Flagellae- Hemagluttinin- Neuraminidase
2. Virulent and nonvirulent viruses may do any of the following but NOT
Inhibit host cell DNA synthesis
Inhibit host cell RNA synthesis
Inhibit host cell protein synthesis
Stimulate host cell macromolecule synthesis
Degrade host cell DNA
3. Viral RNA is replicated in the host cell———–
Cytoplasmic matrix
Nucleus
Wall
Mitochondria
Lysozomes
4. Viroids are composed of———–
single-stranded DNA
double-stranded DNA
single-stranded RNA
double-stranded RNA
DNA and RNA
5. More support for the “protein only” hypothesis for prions has been supplied by studies on a prion found in—-
Humans-Cattle-sheep-Yeast-bacteria
6. Which of the following viruses is the smallest one?
Picorna-Reo-Toga-Corona-Orthomyxo
7. By effect of Bacteriophages on sensitive bacteria, what can we see on agar plates?
Foci-Pocks-Plaques-Syncytia-Pox
8.By which of the following mechanisms, one part of a bacterial genome can be transferred by a phage from one bacterium to another one?
Transformation-Transduction-Conjugation-All-None
9. Inclusion bodies of Measles are located in——– of host cell.
Nucleus-Cytoplasm-Both-None
10. ———– is a family of ds RNA bacteriophages.
Plasmaviridae-Cystoviridae-Leviviridae-Microviridae-Podoviridae
With best wishes-FRZ
Please refer to original testes in the web.
