Food Microbiology Practice Questions

Question 1

Consider the following features of food poisoning:
'Incubation period less than 24 hours, source of infection is milk products, and symptoms include diarrhoea and vomiting.'
To which of the following does the above description apply?

1. Staphylococcal food poisoning
2. Salmonella food poisoning
3. Botulism
Select the correct answer using the code given below:

Accepted Answer

1 only

Answer

2 only

Answer

1 and 3

Answer

1 and 2

Question 2

A 34-year-old woman is at a family picnic where she has a ham sandwich and potato salad. Three hours after the meal, she feels nauseous and throws up.For the above patient with foodborne illness, select the most likely pathogen.

Accepted Answer

Staphylococcus aureus

Answer

C perfringens

Answer

Vibrio parahaemolyticus

Answer

Shigella

Question 3

Consider the following statements: Prophylactic disinfection includes

1. disinfection of urine specimen of patient with enteric fever 
2. pasteurization of milk 
3. disinfection of contaminated linen 
4. disinfection of water by chlorine Which of these statements are correct?

Accepted Answer

2 and 4 only

Answer

1 and 3 only

Answer

1, 2, 3 and 4

Answer

1, 2 and 4 only

Question 4

After attending a birthday party in a hostel around 50 students reported having loose stools, fever and a few reported vomiting. This outbreak can be identified as what type of outbreak ?

Accepted Answer

Common point source only

Answer

Common source continuous

Answer

Propagated only

Answer

Both propagated and common point source

Question 5

Heating a bacterial sample at 60°C for 30 minutes would isolate which of the following?

Accepted Answer

Enterococcus species

Answer

Staphylococci

Answer

Micrococci

Answer

Streptococci

Question 6

A child after consuming food in a party complains of diarrhea within 1-5 hours. The diagnosis is:

Accepted Answer

S. aureus

Answer

Clostridium perfringens

Answer

Streptococcus

Answer

Clostridium botulinum

Question 7

The ELISA test for virulence antigen is used to diagnose which type of Escherichia coli?

Accepted Answer

EPEC

Answer

ETEC

Answer

EIEC

Answer

EHEC

Question 8

An outbreak of staphylococcal infection involving umbilical cords of seven newborn babies was reported in the nursery. Bacteriological survey reveals that two nurses have a large number of Staphylococcus aureus in the nasopharynx. What test should be performed to determine whether these nurses may have been responsible for the outbreak?

Accepted Answer

Bacteriophage typing

Answer

Coagulase testing

Answer

Nasopharyngeal culture on mannitol salt agar

Answer

Protein A typing

Question 9

All are correct about the image shown except:

Accepted Answer

Primary site of infection is CNS

Answer

Cryptococcus neoformans

Answer

Thick polysaccharide capsule

Answer

Mucicarmine stain can be used

Question 10

A patient was admitted with bloody diarrhea after consumption of oysters. The organism exhibits the Kanagawa phenomenon. What is the correct organism?

Accepted Answer

Vibrio parahaemolyticus

Answer

Staphylococcus aureus

Answer

Campylobacter jejuni

Answer

Salmonella typhi

Food Microbiology

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Microorganisms in Food

Food Spoilage

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Foodborne Pathogens

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Fermented Foods

Probiotics and Prebiotics

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Food Microbiology Regulations

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About Food Microbiology for NEET-PG

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