Exam 4 Chapter 25

Which of the following describes secondary metabolites?

Sugar and salt act as preservatives by
A) inhibiting bacterial enzymes 
B) inhibiting DNA replication 
C) producing oils that inhibit bacterial growth
D) killing endospores
E) drawing water out of food 

Select a specific example of bioremediation from the following:

Which of the following is a lactic acid bacterium used in the production of food?
A) Leuconostoc
B) Penicillum
C) Aspergillusoryzae
D) Saccharomyces cerevisiae
E) Gluconobacter

Which of the following statements concerning the biochemical oxygen demand (BOD) is correct?

What was the first substance produced by microorganisms to be used pharmaceutically?

Food microbiology applies to
A) using microbes to solve agricultural.
B) the control of microbial activity to prevent foodborne illness.
C) the use of microorganisms to make food.
D) using microbes to improve livestock and to solve agricultural problems.
E)  the use of microorganisms to make food and to control microbial activity to prevent foodborne illness.

The fermentation product known as silage is
A) a means of food preservation 
B) a means of making plant materials more appealing to livestock
C) a step in the production of brandy 
D) a meat product 
E) made from milk

Which of the following is considered an intrinsic factor for food spoilage?
A) water content
B) amount of preservatives 
C) storage temperature
D) storage packaging
E) degree of processing

Which of the following microorganisms associated with food poisoning thrives in cold storage?

A researcher studying the impact of agricultural pesticides on native plants discovers a bacterium capable of degrading small amounts of a specific pesticide. The researcher then modifies the bacterial species in the lab to increase the rate of pesticide degradation. This research represents
A) food microbiology and environmental microbiology.
B) applied microbiology.
C) environmental microbiology.
D) food microbiology. 
E) applied microbiology and environmental microbiology.

Which of the following pairs of industrial microbial products and their uses is mismatched?

Sulfur dioxide is added to "must" in the production of
A) vodka
B) beer
C) brandy
D) wine
E) whiskey

Which of the following is used in both food production and industrial production?
A) Listeria monocytogenes
B) Escherichia coli
C) Pseudomonas syringae
D) Bacillus thuringiensis
E) Saccharomyces cerevisiae

Rennin is used in the production of

Which of the following is an application of proteases?

Which of the following terms is used to designate the area of water along the shoreline in a lake?

Which of the following sets of characteristics describes the highest level of threat potential from biological weapons?

Which of the following is common source of antibiotics

Chlorinated water contains

During treatmet of water to make it potable, about 90% of the microbes are removed

Which of the following microorganisms is the most commonly used indicator organism for water quality testing?

Which of the following is used to produce soy sauce?

Which of the following is the correct sequence of microbial associations from smallest to largest?

Which of the following results when ethanol is allowed to oxidize to acetic acid following the fermentation of fruit, grain, or vegetables?
A) champagne
B) wine
C) malt
D) beer
E) vinegar

Which of the following methods of preserving food sterilizes it?

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

The fungus Aspergillus oryzae is used in the production of
A) sauerkraut
B) chocolate
C) kimchi
D) coffee
E) soy sauce

Which of the following pairs is mismatched?
A) vodka - potatoes
B) beer - malt
C) whiskey - cereal grains 
D) white wine - must 
E) brandy - fruit juice

Which of the following common food products is prepared by the fermentation of cabbage?
A) tea
B) refined sugar
C) kimchi
D) pasteurized milk
E) sorbet

Rennin is
A) a toxin produced in spoiled food
B) an enzyme used to make cheese
C) a starter substance for making bread rise
D) a by-product of bacterial fermentation that enhances the flavor of meat
E) a fungal product that inhibits bacterial growth 

Potable water is water that

Which of the following bacteria is commonly used to produce vinegar?

Sulfur dioxide may be used in the production of

Sake is a fermentation product of

Streptokinase is involved in which of the following?

A new industrial park in your community dumps its wastewater into a large aerated pond, to which nutrients are added. The water from this pond makes its way into a nearby marsh, which eventually drains into a slow-moving stream. This is an example of

Which of the following statements concerning the phosphorus cycle in bacteria is correct?

Industrial fermentation and fermentation in food production

Which of the following infectious diseases currently tops the list of bioterrorist threats?

Which of these microbial products is needed to produce "gasohol"?

Which of the following is used in the production of yogurt?

Which of the following items that are commonly added during food preparation can be considered a preservative?
A) meat broth 
B) whey
C) apple juice 
D) yeast
E) garlic

Which of the following agents involved in food-borne illness is a eukaryote?