HSS 1100 EXAM QUESTIONS WITH
CORRECT ANSWERS
Three major mechanisms of bacterial resistance to antibiotics? - Answer- 1) alteration in
drug target
2) production of deactivating enzymes
3) decreased uptake of antibiotic
Which of the following is a gram-positive bacterium capable of causing food
poisoning/gastroenteritis? - Answer- bacillus cereus
Which of the following is not an example of an altered target mechanism of antibiotic
resistance? - Answer- production of b-lactamase
Which of the following statements is false? - Answer- a patient cannot be considered a
source for nosocomial infection
List the three main approaches for detecting viruses in a clinical sample - Answer- 1)
detection of virus using electron microscopy
2) cell culture: cytopathic effects, agglutination, immunofluorescence
3) direct detection of immune system (ELISA)
5 factors which affect the efficiency of disinfectant action: - Answer- 1) contact time
2) temperature
3) microbes present
4) organic and inorganic load
5) concentration of germicide
Which of the following statements about viruses is true? - Answer- they can infect man,
animals or both
Most viral infections can be treated with.. - Answer- penicillin
streptomycin
wide-strectum antibiotics
anti-parasitic drugs
NONE OF THE ABOVE
detection of the presence or absence of antibody against a specific virus is referred to
as an - Answer- immunity test
, recurrent cold sores of the lips are most often caused by - Answer- herpes simplex type
1
herpes zoster (shingles) is a manifestation of a latent infection with - Answer- varicella
virus
major epidemics of influenza are caused by - Answer- shifts in the antigenic makeup of
influenza A virus causing immune evasion
Hepatitis Delta agent can be controlled with... - Answer- vaccination against hep B
infectious mononucleosis is caused by... - Answer- epstein-barr virus
viral capsids are mostly composed of which of the following molecules? - Answer-
proteins
killing all the organisms including spores present in a material is known as.. - Answer-
sterilization
the common cold is caused by which of the following microorganisms? - Answer-
rhinovirus
hospitalized patients may have... - Answer- weakened defence mechanisms caused by
disease, surgery, radiation and invasive medical procedures
which of the following CNS viruses have an animal reservoir and the human as an
accidental or dead-end host? - Answer- rabies virus
which of the following reasons is why vaccination against the common cold does not
exist? - Answer- - too many serotypes of the cold virus
- immunity against one serotype does not prevent infection by another serotype
which of the following descriptions about viruses is false? - Answer- can only infect
humans
for organ transplantation, an important organism of concern is: - Answer-
cytomegalovirus
which of the following is prokaryotic? - Answer- bacteria
humoral immunity - Answer- involves B cells
which of the following is NOT a disease caused by a protozoan parasite? - Answer-
trichinosis
CORRECT ANSWERS
Three major mechanisms of bacterial resistance to antibiotics? - Answer- 1) alteration in
drug target
2) production of deactivating enzymes
3) decreased uptake of antibiotic
Which of the following is a gram-positive bacterium capable of causing food
poisoning/gastroenteritis? - Answer- bacillus cereus
Which of the following is not an example of an altered target mechanism of antibiotic
resistance? - Answer- production of b-lactamase
Which of the following statements is false? - Answer- a patient cannot be considered a
source for nosocomial infection
List the three main approaches for detecting viruses in a clinical sample - Answer- 1)
detection of virus using electron microscopy
2) cell culture: cytopathic effects, agglutination, immunofluorescence
3) direct detection of immune system (ELISA)
5 factors which affect the efficiency of disinfectant action: - Answer- 1) contact time
2) temperature
3) microbes present
4) organic and inorganic load
5) concentration of germicide
Which of the following statements about viruses is true? - Answer- they can infect man,
animals or both
Most viral infections can be treated with.. - Answer- penicillin
streptomycin
wide-strectum antibiotics
anti-parasitic drugs
NONE OF THE ABOVE
detection of the presence or absence of antibody against a specific virus is referred to
as an - Answer- immunity test
, recurrent cold sores of the lips are most often caused by - Answer- herpes simplex type
1
herpes zoster (shingles) is a manifestation of a latent infection with - Answer- varicella
virus
major epidemics of influenza are caused by - Answer- shifts in the antigenic makeup of
influenza A virus causing immune evasion
Hepatitis Delta agent can be controlled with... - Answer- vaccination against hep B
infectious mononucleosis is caused by... - Answer- epstein-barr virus
viral capsids are mostly composed of which of the following molecules? - Answer-
proteins
killing all the organisms including spores present in a material is known as.. - Answer-
sterilization
the common cold is caused by which of the following microorganisms? - Answer-
rhinovirus
hospitalized patients may have... - Answer- weakened defence mechanisms caused by
disease, surgery, radiation and invasive medical procedures
which of the following CNS viruses have an animal reservoir and the human as an
accidental or dead-end host? - Answer- rabies virus
which of the following reasons is why vaccination against the common cold does not
exist? - Answer- - too many serotypes of the cold virus
- immunity against one serotype does not prevent infection by another serotype
which of the following descriptions about viruses is false? - Answer- can only infect
humans
for organ transplantation, an important organism of concern is: - Answer-
cytomegalovirus
which of the following is prokaryotic? - Answer- bacteria
humoral immunity - Answer- involves B cells
which of the following is NOT a disease caused by a protozoan parasite? - Answer-
trichinosis
