D311 MICROBIOLOGY EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS
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Course
D311 MICROBIOLOGY
Institution
D311 MICROBIOLOGY
D311 MICROBIOLOGY EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS
Why is the production of lactic acid by the resident microbe Lactobacillus Important to human health? -Answer- Lactic acid is important to human health because it inhibits the growth of pathogenic yeasts.
Which type of infections a...
D311 MICROBIOLOGY EXAM
QUESTIONS WITH CORRECT DETAILED
ANSWERS
Why is the production of lactic acid by the resident microbe Lactobacillus Important to
human health? -Answer- Lactic acid is important to human health because it inhibits the
growth of pathogenic yeasts.
Which type of infections are prevented by proper sterilization of hospital equipment and
healthcare worker handwashing? -Answer- Nosocomial infections are prevented by
proper sterilization of hospital equipment and healthcare worker handwashing.
A patient Is determined to have contracted Lyme disease after being bit by an infected
tick. What type of transmission is described in this scenario? -Answer- Vector
transmission is described in this scenario.
Which is a description of vehicle transmission? -Answer- A person drinks untreated
water on vacation and later has diarrhea and nausea is a description of vehicle
transmission.
Which organism type contains species that perform adhesion through the unique use of
its flagella to move out fluid from under a large adhesive disc, resulting in lower
pressure to adhere to the intestinal lining? -Answer- Protozoa
A patient presents to the emergency department with high fever. difficulty breathing.
vomiting, coughing up blood. and severe chest pain when inhaling. Which pathogen
would the provider suspect? -Answer- Bacillus anthracis
Which activity of the complement system would be useful against an infection caused
by a gram-negative bacterium? -Answer- Membrane attack complex
Which body system is protected by the ciliary escalator? -Answer- Respiratory
What is the role of global public health organizations in eradication of diseases, like
polio? -Answer- Organize vaccination campaigns and programs
Malaria cases are routinely found in certain areas of the world but are not seen In other
areas. How would malaria be described in those areas where it is found? -Answer-
Endemic
A hospital notices an increase in patients being admitted with gastrointestinal symptoms
and dehydration over a two-week period. An epidemiological analysis reveals that the
, cause is the same pathogen, but that none of the hospitalized individuals were ever in
the same location at the same time. What is an explanation for this analysis? -Answer-
These individuals all consumed contaminated food from a common manufacturing
source.
Which action is an innate physical defense? -Answer- Mucous secretions trapping and
removing microbes from the respiratory tract.
Which vaccine type would be effective against an organism that can produce a
capsule? -Answer- Conjugate
Vhich protocol for microbial growth control leaves the least number of living cells? -
Answer- Sterilization
Which type of microbial control is necessary for surgical equipment? -Answer-
Sterilization
How are spore-forming bacteria killed to make canned foods safe for consumption? -
Answer- Heat and pressure
Which type of microbial control is used in a variety of situations, from doorknobs to
swimming pools to diaper cream. to prevent the growth and spread of microbes? -
Answer- Phenolics
Why is boiling not used as a sterilization method In clinical settings? -Answer- Boiling is
not effective against endospores.
Why do beta-lactamase-producing pathogens cause public concern for a community? -
Answer- Beta-lactamase is an enzyme that protects the pathogen from some common
antibiotics.
Why are antlhelmlnthlc drugs difficult to develop? -Answer- Helminths are eukaryotes,
and it is difficult to develop medications with selective toxicity for them.
Which pathogen is susceptible to beta-lactam antimicrobials? -Answer- Prokaryotic
pathogens are susceptible to beta-lactam antimicrobials.
Which process is targeted by antivirals? -Answer- Antivirals target the process of
nucleic acid synthesis in viruses.
Which term describes how bacteriostatic antibiotics become bactericidal when the drugs
are used together? -Answer- The term that describes how bacteriostatic antibiotics
become bactericidal when used together is "Synergism."
How can pathogens typically found in animal feces, such as hantavlrus, be transmitted
through air? -Answer- Dried fecal particles are carried on dust and inhaled by humans.
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