An experimental drug therapy to treat patients with antibiotic-resistant bacteria involves introduction of a highly specific bacteriophage to the infected patient's bloodstream. Which of the following bacteriophage types would be the LEAST useful for this therapy?   a.  a lytic bacteriophage  b. An enveloped virus  c. An RNA virus  d. a lysogenic bacteriophage

Please consider the figure attached  i. The ordinate (i.e., 'y-axis') represents values for the C or G nucleotide base proportion in sequences (or, in this case, genomes).ii. Influenza viruses that infected birds or moved from birds to humans without spreading are characterised by higher A + U content relative to influenza viruses that infected humans for long time periods.iii. Influenza viruses adapted to human hosts are characterised by lower G + C content relative to influenza viruses that infected birds or moved from birds to humans without spreading. iv. Human and swine influenza A H1N1 strains evolved from a birdlike G + C state to a humanlike G + C state since 1918. v. Data such as those depicted in the figure have been interpreted as evidence that the 1918 influenza virus strain originated from a bird influenza virus population.   Question 1 options:   A)  Statement ii conveys accurate information.   B)  Statements ii,…

Select the most accurate answer: Adenoviruses:A. are non-enveloped dsRNAB. are most infection are symptomaticC. are infection are common in adultsD. have only one antigen (serotype)E. are icosahedral, 252 caspsomers, fibers projection, like a satellite (space ship)F. replicate in the cytoplasmG. subgroup A: serotypes 12, 18, and 31: are highly oncogenicH. Both E and G

two directly trasmitted viral diseases have the same basic reproduction number (R0 - R not) even though their dynamics are different. Which of the following differences between the two diseases could lead to the same basic reproduction number? a. one disease has a higher transmission rate and a longer recovery period than the other  b. one disease has a lower transmission rate and a longer recovery period than the other c. one disease has a lower transmission rate and a shorter recovery period than the other d. for one disease, the recovert period is long; for the other, no one recovers

mRNA vaccines are better than DNA vaccines because A. their sequences can be easily modified. B. they can be easily scaled up. C. they can be easily degraded. D. they are single-stranded molecules. E. they do not integrate into the host DNA. O O O O

Match the following terms on the left with those on the right. Not all will be used and some may be used more than one time. priononcogenemRNAviroids a. -sense RNAb. housekeeping genec. Infectious protein d. Infectious RNAe. cancer causingf. + sense RNA

The following statements are correct, except? a. Non-enveloped viruses bind to their host cells via their capsid surface. b. The cell receptor may determine the host range and tissue tropism of viruses. c. Virus particles bind to receptors on their host cells to initiate entry. d. Naked virus particles bind via their transmembrane glycoproteins.