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Microbiology

Microbiology
Bacteria are

all of these
hyper parasitic
symbiotic
saprophytic

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Microbiology
Group I C. botulinum strains generally includes in

all types of strains (proteolytic)A, B and F
None of these
all types of strains (non-proteolytic) E and F
all types of strains (proteolytic)C, D and F

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Microbiology
The gram-positive bacteria lack __________ structure/component?

murein
outer membrane
plasma membrane
teichoic acid

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Microbiology
Gram-negative bacteria, responsible for food poisoning, is/are

Salmonella
Pseudomonas
Clostridia
None of these

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Microbiology
Black kraut is caused by

None of these
the combined actions of plant enzymes and micro-organisms
the micro-organisms
the plant enzymes

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Microbiology
Which of the following can readily kill Salmonellae?

Moist heat at 55°C for 10 min
Moist heat at 55°C for 20 min
Moist heat at 55°C for 30 min
Moist heat at 55°C for 1 hr

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