Question 1

Discuss the production of four different foods that require microbial fermentation in their products. In your discussion, name the specific microorganisms used and describe the fermentation by- product(s) needed for the production of each food item.

Accepted Answer

Sure! There are several foods that requ...

Question 2

All of the following are true of irradiation methods used for food preservation and sterilization EXCEPT

Accepted Answer

A)   they greatly reduce the number of pathogens present in meats and poultry.
B)   residual radioactivity is left behind on many foods.
C)   they prolong shelf- life of fruits and vegetables.
D)   ionizing radiation such as X rays or gamma rays is used.
E)   they are used for the sterilization of many spices.F) C) and E)
G) A) and B)

Question 3

Figure 28.3
 
-Which of the growth curves in Figure 28.3 will give the highest yield of a secondary metabolite?

Accepted Answer

A)   a
B)   b
C)   c
D)   d
E)   eF) B) and E)
G) A) and E)

Question 4

Which of the following pertains to an improperly canned food product on a store shelf that bulges from microbial activity?

Accepted Answer

A)   mesophilic spoilage
B)   flat sour spoilage
C)   thermophilic anaerobic spoilage
D)   hydrogen sulfide spoilage
E)   bacterial soft rotF) D) and E)
G) A) and E)

Question 5

Commercial sterilization of processed canned foods uses a 12D treatment which is based upon a theoretical population of 1012 C. botulinum endospores in a can of food. After treatment, there would theoretically be how many endospores left?

Accepted Answer

A)   10 endospores
B)   100 endospores
C)   1 endospore
D)   12 endospores
E)   0 endosporesF) A) and D)
G) A) and E)

Question 6

What will be produced if wine is aerated?

Accepted Answer

A)   CH4
B)   acetic acid
C)   ethanol + CO2
D)   CO2 + H2O
E)   None of the answers is correct.F) B) and C)
G) A) and D)

Question 7

Biomass is a renewable energy source derived from the organic matter produced by living organisms. All of the following are sources of biomass EXCEPT

Accepted Answer

A)   crops.
B)   landfill sites.
C)   algae.
D)   oxidation of metals.
E)   bacteria.F) A) and E)
G) A) and C)

Question 8

Radiation works to preserve foods through

Accepted Answer

A)   creation of an anaerobic environment and high heat.
B)   lethal mutation of bacterial DNA.
C)   creation of an anaerobic environment.
D)   exposure to high heat.
E)   increasing pH.F) B) and E)
G) D) and E)

Question 9

All of the following are industrial products produced by microbes EXCEPT

Accepted Answer

A)   vitamin B12 and riboflavin.
B)   uranium.
C)   antibiotics.
D)   industrial enzymes.
E)   amino acids in food supplements.F) A) and C)
G) A) and E)

Question 10

Spoilage of canned foods due to inadequate processing, NOT accompanied by gas production, is

Accepted Answer

A)   flat sour spoilage.
B)   thermophilic anaerobic spoilage.
C)   putrefactive anaerobic spoilage.
D)   caused by acid- tolerant fungi.
E)   spoilage by mesophilic bacteria.F) A) and C)
G) A) and E)

Question 11

Xanthan used in household products is produced by bacteria

Accepted Answer

A)   selected for their ability to utilize lactose.
B)   that are plant pathogens.
C)   that were genetically modified.
D)   that were irradiated to mutate them.
E)   selected for their ability to utilize lactose and that are plant pathogens.F) A) and C)
G) A) and B)

Question 12

Which of the following reactions is performed by yeast in wine- making?

Accepted Answer

A)   malic acid -lactic acid
B)   sugar -CO2 + H2O
C)   ethanol -acetic acid
D)   carbon dioxide -sucrose
E)   sugar -ethanolF) All of the above
G) B) and D)

Question 13

The following steps are required for making cheese. What is the second step?

Accepted Answer

A)   inoculation with lactic acid bacteria
B)   inoculation with Penicillium
C)   enzymatic coagulation of milk
D)   fermentation of curd
E)   separation of curds and wheyF) A) and E)
G) B) and E)

Question 14

Aseptic packaging works to preserve foods through

Accepted Answer

A)   creation of an anaerobic environment.
B)   mutation of bacterial DNA.
C)   creation of an anaerobic environment and high heat.
D)   exposure to high heat.
E)   increasing pH.F) C) and E)
G) None of the above

Question 15

The longer interior- ripened cheeses are permitted to ripen, the milder the taste of the cheese.

Accepted Answer

A) True 
 B)False

Question 16

All of the following are fuels produced by microorganisms EXCEPT

Accepted Answer

A)   methane.
B)   hydrogen.
C)   ethanol.
D)   cellulose.
E)   oil from algae.F) B) and C)
G) A) and B)

Question 17

A large industry exists based on the synthesis of amino acids by microorganisms.

Accepted Answer

A) True 
 B)False

Question 18

Spoilage of canned foods stored at high temperatures, accompanied by gas production, is

Accepted Answer

A)   putrefactive anaerobic spoilage.
B)   caused by acid- tolerant fungi.
C)   spoilage by mesophilic bacteria.
D)   flat sour spoilage.
E)   thermophilic anaerobic spoilage.F) A) and C)
G) A) and E)

Exam 28: Applied and Industrial Microbiology

Spoilage of canned foods stored at high temperatures, accompanied by gas production, is

Correct Answer
verified

Xanthan used in household products is produced by bacteria

Correct Answer
verified

Which of the following reactions is performed by yeast in wine- making?

Correct Answer
verified

All of the following are fuels produced by microorganisms EXCEPT

Correct Answer
verified

The longer interior- ripened cheeses are permitted to ripen, the milder the taste of the cheese.

Correct Answer
verified

All of the following are true of irradiation methods used for food preservation and sterilization EXCEPT

Correct Answer
verified

The following steps are required for making cheese. What is the second step?

Correct Answer
verified

Radiation works to preserve foods through

Correct Answer
verified

All of the following are industrial products produced by microbes EXCEPT

Correct Answer
verified

Commercial sterilization of processed canned foods uses a 12D treatment which is based upon a theoretical population of 10¹²C. botulinum endospores in a can of food. After treatment, there would theoretically be how many endospores left?

Correct Answer
verified

Spoilage of canned foods due to inadequate processing, NOT accompanied by gas production, is

Correct Answer
verified

Figure 28.3 -Which of the growth curves in Figure 28.3 will give the highest yield of a secondary metabolite?

Correct Answer
verified

Which of the following pertains to an improperly canned food product on a store shelf that bulges from microbial activity?

Correct Answer
verified

Discuss the production of four different foods that require microbial fermentation in their products. In your discussion, name the specific microorganisms used and describe the fermentation by- product(s) needed for the production of each food item.

Correct Answer
Answered by ExamLex AI

Sure! There are several foods that requ...
View Answer

Aseptic packaging works to preserve foods through

Correct Answer
verified

A large industry exists based on the synthesis of amino acids by microorganisms.

Correct Answer
verified

Biomass is a renewable energy source derived from the organic matter produced by living organisms. All of the following are sources of biomass EXCEPT

Correct Answer
verified

What will be produced if wine is aerated?

Correct Answer
verified

Exam 28: Applied and Industrial Microbiology

Spoilage of canned foods stored at high temperatures, accompanied by gas production, is

Correct AnswerverifiedShow Answer

Xanthan used in household products is produced by bacteria

Correct AnswerverifiedShow Answer

Which of the following reactions is performed by yeast in wine- making?

Correct AnswerverifiedShow Answer

All of the following are fuels produced by microorganisms EXCEPT

Correct AnswerverifiedShow Answer

The longer interior- ripened cheeses are permitted to ripen, the milder the taste of the cheese.

Correct AnswerverifiedShow Answer

All of the following are true of irradiation methods used for food preservation and sterilization EXCEPT

Correct AnswerverifiedShow Answer

The following steps are required for making cheese. What is the second step?

Correct AnswerverifiedShow Answer

Radiation works to preserve foods through

Correct AnswerverifiedShow Answer

All of the following are industrial products produced by microbes EXCEPT

Correct AnswerverifiedShow Answer

Commercial sterilization of processed canned foods uses a 12D treatment which is based upon a theoretical population of 1012 C. botulinum endospores in a can of food. After treatment, there would theoretically be how many endospores left?

Correct AnswerverifiedShow Answer

Spoilage of canned foods due to inadequate processing, NOT accompanied by gas production, is

Correct AnswerverifiedShow Answer

Figure 28.3 -Which of the growth curves in Figure 28.3 will give the highest yield of a secondary metabolite?

Correct AnswerverifiedShow Answer

Which of the following pertains to an improperly canned food product on a store shelf that bulges from microbial activity?

Correct AnswerverifiedShow Answer

Discuss the production of four different foods that require microbial fermentation in their products. In your discussion, name the specific microorganisms used and describe the fermentation by- product(s) needed for the production of each food item.

Correct AnswerAnswered by ExamLex AISure! There are several foods that requ...View AnswerShow Answer

Aseptic packaging works to preserve foods through

Correct AnswerverifiedShow Answer

A large industry exists based on the synthesis of amino acids by microorganisms.

Correct AnswerverifiedShow Answer

Biomass is a renewable energy source derived from the organic matter produced by living organisms. All of the following are sources of biomass EXCEPT

Correct AnswerverifiedShow Answer

What will be produced if wine is aerated?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Commercial sterilization of processed canned foods uses a 12D treatment which is based upon a theoretical population of 10¹²C. botulinum endospores in a can of food. After treatment, there would theoretically be how many endospores left?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI

Sure! There are several foods that requ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified