Answer Happy

Question 11
Which of the following bacterial strains has the highest pathogenicity?
Select one:
A.Strain B, ID50 = 100 cells
B.Strain C, ID50 = 1,000 cells
C.Strain D, ID50 = 10,000 cells
D.Strain E, ID50 = 100,000 cells
E.Strain A, ID50 = 10 cells
Question 12
Reverse transcriptase inhibitors are effective for treating
Select one:
A.hepatitis B infection.
B.malaria.
C.HPV infection.
D.S. aureus infection.
E.HIV infection.
Question 13
13. Rank the following techniques in order of decreasing ability to kill endospores.
I. Dry heating at 100oC
II. Autoclaving
III. Boiling at 100oC
IV. HTST Pasteurization
Select one:
A.II > I > III > IV
B.I > II > IV > III
C.III > II > I > IV
D.II > III > I > IV
E.IV > III > II > I
Question 14
Bleach is not recommended for the disinfection of
Select one:
A.hands.
B.sewage.
C.laboratory equipment.
D.door handles.
E.chairs.
Question 15
Which of the following statements about viruses is correct?
Select one:
A.They contain organelles.
B.Their genome is DNA only.
C.They undergo viral replication extracellularly.
D.Their sizes are in the nanometer range.
E.They carry enzymes for energy metabolism.
*with explanation