Microbiology
Exam III
Multiple choice part
Viruses
In which of the following ways do viruses differ from bacteria? (a) viruses are filterable (b) viruses are obligate intracellular parasites (c) viruses are not composed of cells (d) all of the above (e)none of the above
Bacteriophages and animal viruses do not differ significantly in which one of the following steps? (a)adsorption (b) penetration (c)uncoating (d)biosynthesis (e)none of the above
Which of the following would be the first step in the biosynthesis of a virus with reverse transcriptase? (a)synthesizes DNA from a RNA template (b) synthesizes double-stranded RNA from an RNA template (c)synthesizes double-stranded RNA from a DNA template (d)transcribes mRNA from DNA (e)none of the above
Which of the following would be the first step in the biosynthesis of a virus with reverse transcriptase? (a) a complementary strand of RNA must be synthesized (b)double -stranded RNA must be synthesized (c)complementary strand of DNA must be synthesized from an RNA template (d)a complementary strand of DNA must be synthesized from a DNA template (e)none of the above
The definition of lysogeny is: (a)phage DNA is incorporated into host cell DNA (b)lysis of the host cell due to a phage (c)the period during replication when virions are not present (d) when the burst time takes an unusually long time (e)none of the above
Which of the following statements is not true? (a)Viruses contain DNA or RNA (b)the nucleic acid of a virus is surrounded by a protein coat (c)viruses multiply inside living cells using viral mRNA, viral tRNA, and viral ribosomes (d)viruses multiply inside living cells
Scrapie is an example of an infection caused by: (a)a difficult -to-grow bacterium (b)a prion (c)a difficult-to-detect virus (d)any of the above are possible (e)none of the above
An example of a latent viral infection is:...
English: Schematic of gram-positive cell wall show...
None - This image is in the public domain and thus...
From left to right, the structures of A-, B- and Z...