Course

Microbiology

Study Pack

Set 25 Applied And Industrial Microbiology

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Question 1

(Multiple Choice)

Free
Which of the following is a lactic acid bacterium used in the production of food?

A) Aspergillus oryzae
B) Gluconobacter
C) Leuconostoc
D) Penicillium
E) Saccharomyces cerevisiae

Answer

Question 2

(Multiple Choice)

Free
Why are "fortified" foods more likely to spoil than are unfortified foods?

A) The addition of vitamins or minerals makes the food more nutritious for microbes as well as humans.
B) Vitamins are added to "fortified" foods by adding the microbes that produce the vitamins to the food item.
C) Every step of modification or manipulation of food increases the chance for contamination.
D) The addition of nutrients creates an osmotic environment suitable for a wide range of microbes.
E) The vitamins require a neutral pH environment, which is suitable for many microbes.

Answer

Question 3

(Multiple Choice)

Free
Pickling is an effective means of food preservation involving

A) increasing oxygen content.
B) increasing salt concentration.
C) reducing pH.
D) reducing oxygen content.
E) increasing salt concentration or reducing pH or both.

Answer