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1. Carcasses of animals may be contaminated with
- Mycobacterium
- Pediococcus
- Proteus
- Salmonella
2. The number of mciroorganisms in air depends on
- sunshine
- humidity
- amount of suspended dust
- all the above
3. The microbial load shed by a human being per minute is
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- 10^3 – 10^4
- 10^1 – 10^3
- 10^6 – 10^8
- 10^4 – 10^5
4. During processing, foods can get contaminated because of
- workers
- equipment
- packaging materials
- all of them
5. Which of the following is based on the review of airborne contamination by Heldman (1974)?
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- The microbial populations are different in processing plants.
- The population levels are not related to the activity of the workers.
- Populations in a plant are not related to the air quality outside the plant.
- The microbial populations of different processing plants are similar.
6. Water used for soft drinks are treated with
- Sand filters
- Chlorination
- UV rays
- both b and c
7. The bacterium causing the surface taint of cheese, Pseudomonas putrifaciens,
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- comes primarily from water
- comes from air
- comes from sewage
- comes from soil
8. An important source of heat-resistant spore-forming bacteria is from
- air
- sewage
- soil
- water
9. Coliform bacteria, anaerobes, Enterococci, other intestinal bacteria and viruses are generally
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- present in soil
- present in sewage
- present in water
- present in animals
10. Mechanical damage to fruits and vegetables by birds open the way
- to microbial spoilage
- to chemical spoilage
- to spread infectious diseases
- none of the above
