LSUE MICRO LECTURE DR AL QUESTIONS AND ANSWERS 2025
which of the following statements about staphyloccal food poisoning is false? - (ANSWER)it can be
prevented by boiling food for 5 mins
microscopic examination of a patients fecal culture shows spiral bacteria. the bacteria probably belongs
to to the genus - (ANSWER)camplyobacter
clostridium perfringens causes both clostridial food poisoning andq - (ANSWER)Gas gangrene
malta fever is caused by a - (ANSWER)gran (-) rod, Brucella abortus
An aerobic gram (+) sporeformer that causes food poisoning is - (ANSWER)bacillus cereus
Most food fall in a pH range of - (ANSWER)5-7
the bacterial limit for pasteurized Grade A milk is - (ANSWER)20,000/ML
the disease caused by streptococcus mutans is - (ANSWER)dental caries
bacterial intoxications differ from bacterial infections of the digestive system in that intoxications -
(ANSWER)have shorter incubation time.
sludge digestion - (ANSWER)takes place under anaerobic conditions
coliforms and fecal coliforms are often differenciated based on there responce to -
(ANSWER)temperature
which of the following sequences is used in the purification of water - (ANSWER)flocculation,filtration,
chlorilination
, LSUE MICRO LECTURE DR AL QUESTIONS AND ANSWERS 2025
Ascaris lumbricoides - (ANSWER)the largest intestinal nematode and the cause of roundworm disease
a fever that often is high in the daytime and low in the evening is assciated with brucelosis -
(ANSWER)uadulant fever
which of the following does not always require the presence of living bacteria - (ANSWER)all of the
choices
the time required for a milk sample to change color of added methylene blue is the basis for the -
(ANSWER)reductase test
lactose is - (ANSWER)dissacharide that can be digested by only a relativly few bacteria
an influenza like disorder transmitted in raw milk caused by - (ANSWER)coxiella burnetii
In the standard plate count method, plates used to determine the bacterial count should have______
colonies. - (ANSWER)30-300
grade a pasteurized milk may have no more than - (ANSWER)20000 total bacterial and 10 coliforms
which of the following does not produce a gastrointestinal disease due to an exotoxin -
(ANSWER)shigella dysenteriae
in the lower region of the small intestine, entamoba histolytica - (ANSWER)all of the choices
which of the following will not preserve foods - (ANSWER)microwave
an organism that can survive and grow at refreigerator temperatures is termed -
(ANSWER)psychrotrophillic
which of the following statements about staphyloccal food poisoning is false? - (ANSWER)it can be
prevented by boiling food for 5 mins
microscopic examination of a patients fecal culture shows spiral bacteria. the bacteria probably belongs
to to the genus - (ANSWER)camplyobacter
clostridium perfringens causes both clostridial food poisoning andq - (ANSWER)Gas gangrene
malta fever is caused by a - (ANSWER)gran (-) rod, Brucella abortus
An aerobic gram (+) sporeformer that causes food poisoning is - (ANSWER)bacillus cereus
Most food fall in a pH range of - (ANSWER)5-7
the bacterial limit for pasteurized Grade A milk is - (ANSWER)20,000/ML
the disease caused by streptococcus mutans is - (ANSWER)dental caries
bacterial intoxications differ from bacterial infections of the digestive system in that intoxications -
(ANSWER)have shorter incubation time.
sludge digestion - (ANSWER)takes place under anaerobic conditions
coliforms and fecal coliforms are often differenciated based on there responce to -
(ANSWER)temperature
which of the following sequences is used in the purification of water - (ANSWER)flocculation,filtration,
chlorilination
, LSUE MICRO LECTURE DR AL QUESTIONS AND ANSWERS 2025
Ascaris lumbricoides - (ANSWER)the largest intestinal nematode and the cause of roundworm disease
a fever that often is high in the daytime and low in the evening is assciated with brucelosis -
(ANSWER)uadulant fever
which of the following does not always require the presence of living bacteria - (ANSWER)all of the
choices
the time required for a milk sample to change color of added methylene blue is the basis for the -
(ANSWER)reductase test
lactose is - (ANSWER)dissacharide that can be digested by only a relativly few bacteria
an influenza like disorder transmitted in raw milk caused by - (ANSWER)coxiella burnetii
In the standard plate count method, plates used to determine the bacterial count should have______
colonies. - (ANSWER)30-300
grade a pasteurized milk may have no more than - (ANSWER)20000 total bacterial and 10 coliforms
which of the following does not produce a gastrointestinal disease due to an exotoxin -
(ANSWER)shigella dysenteriae
in the lower region of the small intestine, entamoba histolytica - (ANSWER)all of the choices
which of the following will not preserve foods - (ANSWER)microwave
an organism that can survive and grow at refreigerator temperatures is termed -
(ANSWER)psychrotrophillic
