MICR 4423 EXAM 5 2026 REVISION NOTES
AND STRUCTURED MICROBIOLOGY SYSTEMS
OVERVIEW GUIDE
◉ Which of the following is the most important mode of
transmission for rotaviruses? Answer: the fecal-oral route
◉ The large intestine contains Clostridium spp. and archaeans,
among many other microbial species. Answer: True
◉ What type of digestion occurs in the mouth? Answer: Chemical
and physical breakdown of food
◉ What is the minimum safe holding temperature for cooked food?
Answer: 60C
◉ Oral thrush is caused by which pathogen? Answer: Candida spp.,
including C. albicans
◉ Which hepatitis virus can only infect an individual who has
already been infected by hepatitis B virus? Answer: HDV
, ◉ Pancreatic juice helps neutralize acidic, partially digested food in
the small intestine. Answer: True
◉ Plaque on teeth is an example of which of the following? Answer:
A biofilm
◉ Which of the following aids identification of Vibrio cholerae, the
causative agent for cholera, through culturing? Answer: It produces
white/colorless colonies on MacConkey agar.
◉ Cholera is best controlled by which of the following? Answer:
using good sanitation and hygiene practices to the greatest extent
possible
◉ What types of microbes are found in the mouth? Answer: Archea
and bacteria
◉ Herpes simplex virus 1 can cause a mouth infection called
herpetic gingivostomatitis. Answer: True
◉ Vaccination is routinely recommended for which type of virus?
Answer: rotavirus
AND STRUCTURED MICROBIOLOGY SYSTEMS
OVERVIEW GUIDE
◉ Which of the following is the most important mode of
transmission for rotaviruses? Answer: the fecal-oral route
◉ The large intestine contains Clostridium spp. and archaeans,
among many other microbial species. Answer: True
◉ What type of digestion occurs in the mouth? Answer: Chemical
and physical breakdown of food
◉ What is the minimum safe holding temperature for cooked food?
Answer: 60C
◉ Oral thrush is caused by which pathogen? Answer: Candida spp.,
including C. albicans
◉ Which hepatitis virus can only infect an individual who has
already been infected by hepatitis B virus? Answer: HDV
, ◉ Pancreatic juice helps neutralize acidic, partially digested food in
the small intestine. Answer: True
◉ Plaque on teeth is an example of which of the following? Answer:
A biofilm
◉ Which of the following aids identification of Vibrio cholerae, the
causative agent for cholera, through culturing? Answer: It produces
white/colorless colonies on MacConkey agar.
◉ Cholera is best controlled by which of the following? Answer:
using good sanitation and hygiene practices to the greatest extent
possible
◉ What types of microbes are found in the mouth? Answer: Archea
and bacteria
◉ Herpes simplex virus 1 can cause a mouth infection called
herpetic gingivostomatitis. Answer: True
◉ Vaccination is routinely recommended for which type of virus?
Answer: rotavirus
