Question 1

Antibiotics are not added to foods and milk in the United States because

Accepted Answer

A)  resistant strains of pathogens might arise from the process 
B)  humans might become allergic to antibiotics 
C)  antibiotics might interfere with the activities of microbes essential for fermenting milk and making cheese 
D)  all of the above 
A)  resistant strains of pathogens might arise from the process 
B)  humans might become allergic to antibiotics 
C)  antibiotics might interfere with the activities of microbes essential for fermenting milk and making cheese 
D)  all of the above

Question 2

Wort is a precursor for

Accepted Answer

A)  white wine 
B)  red wine 
C)  brandy 
D)  beer 
A)  white wine 
B)  red wine 
C)  brandy 
D)  beer

Question 3

What statement about microorganism production of enzymes is incorrect?

Accepted Answer

A)  all enzymes used in industrial processes are synthesized in living organisms 
B)  enzyme specificity minimizes the problems of product purification 
C)  invertase is the commercially available enzyme produced in greatest quantity 
D)  Aspergillus molds produce proteases and amylases 
A)  all enzymes used in industrial processes are synthesized in living organisms 
B)  enzyme specificity minimizes the problems of product purification 
C)  invertase is the commercially available enzyme produced in greatest quantity 
D)  Aspergillus molds produce proteases and amylases

Question 4

Out of the list below,which worm infection can be transmitted via fruits and vegetables?

Accepted Answer

A)  Pseudomonas fluorescens 
B)  Entamoeba histolytica 
C)  Salmonella 
D)  Ascaris 
A)  Pseudomonas fluorescens 
B)  Entamoeba histolytica 
C)  Salmonella 
D)  Ascaris

Question 5

All of the following are true about microorganisms in food except

Accepted Answer

A)  freezing kills most microbes that contaminate food 
B)  many microbes find the high osmotic pressure in jam inhospitable 
C)  scallops rarely transmit disease because only muscular portions are eaten 
D)  chicken eggs are porous allowing the entry of bacteria as well as fungi 
A)  freezing kills most microbes that contaminate food 
B)  many microbes find the high osmotic pressure in jam inhospitable 
C)  scallops rarely transmit disease because only muscular portions are eaten 
D)  chicken eggs are porous allowing the entry of bacteria as well as fungi

Question 6

Canned goods

Accepted Answer

A)  will not spoil unless they are dented or improperly canned at the factory 
B)  will not spoil because of the high salt content 
C)  will remain edible for years 
D)  have been subjected to dry heat under very low pressure but high oxygen treatment 
A)  will not spoil unless they are dented or improperly canned at the factory 
B)  will not spoil because of the high salt content 
C)  will remain edible for years 
D)  have been subjected to dry heat under very low pressure but high oxygen treatment

Question 7

Vinegar

Accepted Answer

A)  can be made from microorganisms from ethanol or cellulose 
B)  is rarely made by microorganisms 
C)  is made by adding sodium sulfite to a yeast fermentation 
D)  is used in the manufacture of antifreeze, pesticides, explosives and cosmetics 
A)  can be made from microorganisms from ethanol or cellulose 
B)  is rarely made by microorganisms 
C)  is made by adding sodium sulfite to a yeast fermentation 
D)  is used in the manufacture of antifreeze, pesticides, explosives and cosmetics

Question 8

All of the following statements are true about bacterial contamination of melons except

Accepted Answer

A)  canteloupes are often contaminated because their netted surfaces allow biofilms to form 
B)  surface pasteurization kills 99.999% of Salmonella but affects the quality of the melon 
C)  melons can be surface pasteurized 
D)  about 5% of melons imported into the United States have biofilm layers of Salmonella 
A)  canteloupes are often contaminated because their netted surfaces allow biofilms to form 
B)  surface pasteurization kills 99.999% of Salmonella but affects the quality of the melon 
C)  melons can be surface pasteurized 
D)  about 5% of melons imported into the United States have biofilm layers of Salmonella

Question 9

Biohydrometallurgy is

Accepted Answer

A)  the production of steroid hormones by microorganisms 
B)  the utilization of microbes to extract metals from ores 
C)  an effective method to prevent canned foods from becoming contaminated 
D)  undertaken by large pharmaceutical companies 
A)  the production of steroid hormones by microorganisms 
B)  the utilization of microbes to extract metals from ores 
C)  an effective method to prevent canned foods from becoming contaminated 
D)  undertaken by large pharmaceutical companies

Question 10

Food processing equipment is disinfected with

Accepted Answer

A)  ultraviolet radiation 
B)  formaldehyde 
C)  gamma rays 
D)  microwaves 
A)  ultraviolet radiation 
B)  formaldehyde 
C)  gamma rays 
D)  microwaves

Question 11

Which alkylating agent is used to control microbes in nuts and spices?

Accepted Answer

A)  ethylene oxide 
B)  nisin 
C)  propylene oxide 
D)  two of the above 
A)  ethylene oxide 
B)  nisin 
C)  propylene oxide 
D)  two of the above

Question 12

Claviceps purpurea contaminates

Accepted Answer

A)  raw milk 
B)  raw grains 
C)  processed diary products 
D)  packaged lunch meats 
A)  raw milk 
B)  raw grains 
C)  processed diary products 
D)  packaged lunch meats

Question 13

A bacterial strain used to remove the pectin in the outer layer of the coffee bean in preparation for processing is

Accepted Answer

A)  Phytophthora infestans 
B)  Erwinia carotovora 
C)  Erwinia dissolvens 
D)  Hemileia vastatri 
A)  Phytophthora infestans 
B)  Erwinia carotovora 
C)  Erwinia dissolvens 
D)  Hemileia vastatri

Question 14

High quality milk is guaranteed to consumers by

Accepted Answer

A)  phosphatase test 
B)  reductase test 
C)  tests for coliforms 
D)  all of the above 
A)  phosphatase test 
B)  reductase test 
C)  tests for coliforms 
D)  all of the above

Question 15

What can cause mild to severe gastroenteritis,arthritis,glomerulonephrities,a fatal typhoid like septicemia,and fatal ileitis,and inflammation of the small intestines that can be misdiagnosed as appendicitis?

Accepted Answer

A)  Adirondack disease 
B)  Erysipelas 
C)  Yersinia enterocolitica infection 
D)  two of the above 
A)  Adirondack disease 
B)  Erysipelas 
C)  Yersinia enterocolitica infection 
D)  two of the above

Question 16

Aflatoxins are produced by

Accepted Answer

A)  Claviceps purpurea 
B)  Staphylococcus 
C)  Aspergillus 
D)  Bacillus 
A)  Claviceps purpurea 
B)  Staphylococcus 
C)  Aspergillus 
D)  Bacillus

Question 17

Milk naturally contains some antimicrobial substances which include

Accepted Answer

A)  agglutinins 
B)  leukocytes 
C)  lactenin 
D)  all of the above 
A)  agglutinins 
B)  leukocytes 
C)  lactenin 
D)  all of the above

Question 18

Microorganisms have been found to

Accepted Answer

A)  degrade cyanide 
B)  deactivate Arochlor 1260, the most highly toxic PCB compound 
C)  degrade dioxin 
D)  all of the above 
A)  degrade cyanide 
B)  deactivate Arochlor 1260, the most highly toxic PCB compound 
C)  degrade dioxin 
D)  all of the above

Question 19

Which statement about contamination of eggs is incorrect?

Accepted Answer

A)  Cracked eggs cannot be sold. 
B)  Lysozymes in the whites protect the yolk. 
C)  Trace metals in the whites are tightly bonded with proteins. 
D)  Eggs should be stored small side up 
A)  Cracked eggs cannot be sold. 
B)  Lysozymes in the whites protect the yolk. 
C)  Trace metals in the whites are tightly bonded with proteins. 
D)  Eggs should be stored small side up

Question 20

All of the following statements about spices are true except

Accepted Answer

A)  they have a well deserved reputation as antimicrobials 
B)  most microorganisms found in spices are not pathogens 
C)  often mask odors of putrefaction 
D)  while they teem with bacteria they aren't harmful as they are used in small amounts 
A)  they have a well deserved reputation as antimicrobials 
B)  most microorganisms found in spices are not pathogens 
C)  often mask odors of putrefaction 
D)  while they teem with bacteria they aren't harmful as they are used in small amounts

Exam 26: Applied Microbiology

Antibiotics are not added to foods and milk in the United States because

Wort is a precursor for

What statement about microorganism production of enzymes is incorrect?

Out of the list below,which worm infection can be transmitted via fruits and vegetables?

All of the following are true about microorganisms in food except

Canned goods

Vinegar

All of the following statements are true about bacterial contamination of melons except

Biohydrometallurgy is

Food processing equipment is disinfected with

Which alkylating agent is used to control microbes in nuts and spices?

Claviceps purpurea contaminates

A bacterial strain used to remove the pectin in the outer layer of the coffee bean in preparation for processing is

High quality milk is guaranteed to consumers by

What can cause mild to severe gastroenteritis,arthritis,glomerulonephrities,a fatal typhoid like septicemia,and fatal ileitis,and inflammation of the small intestines that can be misdiagnosed as appendicitis?

Aflatoxins are produced by

Milk naturally contains some antimicrobial substances which include

Microorganisms have been found to

Which statement about contamination of eggs is incorrect?

All of the following statements about spices are true except

Scope and History of Microbiology

Fundamentals of Chemistry

Microscopy and Staining

Characteristics of Prokaryotic and Eukaryotic Cells

Essential Concepts of Metabolism

Growth and Culturing of Bacteria

Microbial Genetics

Gene Transfer and Genetic Engineering

An Introduction to Taxonomy: the Bacteria

Viruses

Eukaryotic Microorganisms and Parasites

Sterilization and Disinfection

Antimicrobial Therapy

Host-Microbe Relationships and Disease Processes

Epidemiology and Nosocomial Infections

Innate Host Defenses

Immunology I: Basic Principles of Adaptive Immunity and Immunization

Immunolgy Ii: Immunological Disorders and Tests

Diseases of the Skin and Eyes; Wounds and Bites

Urogenital and Sexually Transmitted Diseases

Diseases of the Respiratory System

Oral and Gastrointestinal Diseases

Cardiovascular, lymphatic and Systemic Disease

Diseases of the Nervous System

Environmental Microbiology

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