Question 1

Which of the following staphylococcal virulence factors produce the signs and symptoms of scalded skin syndrome?

Accepted Answer

A)  hyaluronidase 
B)  staphylokinase 
C)  exfoliative toxin 
D)  leukocidin 
E)  coagulase 
A)  hyaluronidase 
B)  staphylokinase 
C)  exfoliative toxin 
D)  leukocidin 
E)  coagulase

Question 2

Which of the following streptococci is associated with dental caries?

Accepted Answer

A)  viridans streptococci 
B)  Streptococcus pyogenes 
C)  Streptococcus pneumoniae 
D)  Streptococcus equisimilis 
E)  Streptococcus arginosus 
A)  viridans streptococci 
B)  Streptococcus pyogenes 
C)  Streptococcus pneumoniae 
D)  Streptococcus equisimilis 
E)  Streptococcus arginosus

Question 3

In its role in the development of acne,(Propionibacterium/Staphylococcus/Actinomyces)typically grows in sebaceous glands of the skin.

Accepted Answer

The answer of In its role in the development of...

Question 4

The primary reservoir of anthrax is herbivores.

Accepted Answer

A) True 
 B)False

Question 5

The Quellung reaction is a test to detect

Accepted Answer

A)  hemolysins. 
B)  kinases. 
C)  pyrogens. 
D)  capsule antigens. 
E)  protein M. 
A)  hemolysins. 
B)  kinases. 
C)  pyrogens. 
D)  capsule antigens. 
E)  protein M.

Question 6

Which of the following statements about Bacillus anthracis is FALSE?

Accepted Answer

A)  It is primarily a disease of humans. 
B)  It produces endospores. 
C)  It has a capsule. 
D)  It normally dwells in the soil and can survive in the environment for centuries or longer. 
E)  It can be lethal even after treatment because antimicrobial drugs do not inactivate accumulated anthrax toxin. 
A)  It is primarily a disease of humans. 
B)  It produces endospores. 
C)  It has a capsule. 
D)  It normally dwells in the soil and can survive in the environment for centuries or longer. 
E)  It can be lethal even after treatment because antimicrobial drugs do not inactivate accumulated anthrax toxin.

Question 7

Which of the following statements regarding Streptococcus pyogenes is FALSE?

Accepted Answer

A)  It produces protein A, which inhibits opsonization. 
B)  It is beta-hemolytic. 
C)  It has group A Lancefield antigens. 
D)  It produces streptolysins. 
E)  It can be lysogenized by a temperate bacteriophage to produce erythrogenic toxins. 
A)  It produces protein A, which inhibits opsonization. 
B)  It is beta-hemolytic. 
C)  It has group A Lancefield antigens. 
D)  It produces streptolysins. 
E)  It can be lysogenized by a temperate bacteriophage to produce erythrogenic toxins.

Question 8

Which of the following statements concerning tetanus is FALSE?

Accepted Answer

A)  Its only source is from deep puncture wounds from rusty nails. 
B)  Its toxin causes simultaneous contraction of both muscles in an antagonistic pair. 
C)  It is a small, motile, obligate anaerobe. 
D)  It produces a terminal endospore that gives the cell a distinctive "lollipop" appearance. 
E)  Its diagnostic feature is characteristic muscle contractions, which are often noted too late to save the patient. 
A)  Its only source is from deep puncture wounds from rusty nails. 
B)  Its toxin causes simultaneous contraction of both muscles in an antagonistic pair. 
C)  It is a small, motile, obligate anaerobe. 
D)  It produces a terminal endospore that gives the cell a distinctive "lollipop" appearance. 
E)  Its diagnostic feature is characteristic muscle contractions, which are often noted too late to save the patient.

Question 9

A sample of fluid from the lungs contains microbes that grow in filaments or clumps.The cells stain poorly in the Gram stain and are a pink-red when acid-fast stained.The bacteria in the sample are

Accepted Answer

A)  Mycobacterium species. 
B)  Mycoplasma species. 
C)  Nocardia species. 
D)  Actinomyces species. 
E)  not identifiable with this information. 
A)  Mycobacterium species. 
B)  Mycoplasma species. 
C)  Nocardia species. 
D)  Actinomyces species. 
E)  not identifiable with this information.

Question 10

What is the most common disease caused by Propionibacterium?

Accepted Answer

A)  acne 
B)  food poisoning 
C)  pneumonitis 
D)  folliculitis 
E)  a sty 
A)  acne 
B)  food poisoning 
C)  pneumonitis 
D)  folliculitis 
E)  a sty

Question 11

Which of the following bacteria produce one of the most deadly bacterial toxins known?

Accepted Answer

A)  Clostridium perfringens 
B)  Clostridium difficile 
C)  Clostridium tetani 
D)  Clostridium botulinum 
E)  Corynebacterium species 
A)  Clostridium perfringens 
B)  Clostridium difficile 
C)  Clostridium tetani 
D)  Clostridium botulinum 
E)  Corynebacterium species

Question 12

Which of the following bacteria can cause life-threatening pseudomembranous colitis?

Accepted Answer

A)  Clostridium difficile 
B)  Staphylococcus aureus 
C)  Streptococcus pyogenes 
D)  Enterococcus species 
E)  Clostridium botulinum 
A)  Clostridium difficile 
B)  Staphylococcus aureus 
C)  Streptococcus pyogenes 
D)  Enterococcus species 
E)  Clostridium botulinum

Question 13

Bacterial food poisoning resulting from Clostridium (botulinum/difficile/perfringens)contamination is characterized by watery diarrhea accompanied by intestinal cramping but not fever,and it resolves in about a day.

Accepted Answer

The answer of Bacterial food poisoning resulting from Clostridium (botulinum/difficile/perfringens)contamination...

Question 14

Which of the following statements about diphtheria is FALSE?

Accepted Answer

A)  All species of Corynebacterium may be pathogenic. 
B)  Its toxin interferes with eukaryotic protein synthesis. 
C)  It produces a characteristic pseudomembrane that can adhere to tissues in the throat. 
D)  Its growth on Loffler's medium is used for absolute diagnosis of the bacterium. 
E)  Its toxin can be absorbed into the blood from cutaneous lesions leading to severe complications. 
A)  All species of Corynebacterium may be pathogenic. 
B)  Its toxin interferes with eukaryotic protein synthesis. 
C)  It produces a characteristic pseudomembrane that can adhere to tissues in the throat. 
D)  Its growth on Loffler's medium is used for absolute diagnosis of the bacterium. 
E)  Its toxin can be absorbed into the blood from cutaneous lesions leading to severe complications.

Question 15

Painful swelling and rapidly spreading subcutaneous tissue necrosis is characteristic of a wound infection by

Accepted Answer

A)  Clostridium perfringens. 
B)  Clostridium tetani. 
C)  Mycobacterium leprae. 
D)  Bacillus anthracis. 
E)  Clostridium difficile. 
A)  Clostridium perfringens. 
B)  Clostridium tetani. 
C)  Mycobacterium leprae. 
D)  Bacillus anthracis. 
E)  Clostridium difficile.

Question 16

A person comes into the clinic with a wound that is severely inflamed,very painful,and turning black and "bubbly." The diagnosis is leprosy.

Accepted Answer

A) True 
 B)False

Question 17

Otitis media may lead to dangerous meningitis in children due to infection with

Accepted Answer

A)  Streptococcus agalactiae. 
B)  Streptococcus pneumoniae. 
C)  Streptococcus mutans. 
D)  Enterococcus. 
E)  Mycoplasma pneumoniae. 
A)  Streptococcus agalactiae. 
B)  Streptococcus pneumoniae. 
C)  Streptococcus mutans. 
D)  Enterococcus. 
E)  Mycoplasma pneumoniae.

Question 18

Common sources of Listeria are undercooked meats and vegetables and unpasteurized (eggs/soft cheeses/juices).

Accepted Answer

The answer of Common sources of Listeria are undercooked meats...

Question 19

Untreated streptococcal pharyngitis may progress to

Accepted Answer

A)  scarlet fever. 
B)  necrotizing fasciitis. 
C)  rheumatic fever. 
D)  scarlet fever or necrotizing fasciitis. 
E)  scarlet fever or rheumatic fever. 
A)  scarlet fever. 
B)  necrotizing fasciitis. 
C)  rheumatic fever. 
D)  scarlet fever or necrotizing fasciitis. 
E)  scarlet fever or rheumatic fever.

Question 20

Mycobacterium leprae infections manifest in two different forms in a patient.What are these? What determines which form the patient will develop?

Accepted Answer

Mycobacterium leprae produces a disease

Exam 19: Pathogenic Gram Positive Bacteria

Which of the following staphylococcal virulence factors produce the signs and symptoms of scalded skin syndrome?

Which of the following streptococci is associated with dental caries?

In its role in the development of acne,(Propionibacterium/Staphylococcus/Actinomyces)typically grows in sebaceous glands of the skin.

The primary reservoir of anthrax is herbivores.

The Quellung reaction is a test to detect

Which of the following statements about Bacillus anthracis is FALSE?

Which of the following statements regarding Streptococcus pyogenes is FALSE?

Which of the following statements concerning tetanus is FALSE?

A sample of fluid from the lungs contains microbes that grow in filaments or clumps.The cells stain poorly in the Gram stain and are a pink-red when acid-fast stained.The bacteria in the sample are

What is the most common disease caused by Propionibacterium?

Which of the following bacteria produce one of the most deadly bacterial toxins known?

Which of the following bacteria can cause life-threatening pseudomembranous colitis?

Bacterial food poisoning resulting from Clostridium (botulinum/difficile/perfringens)contamination is characterized by watery diarrhea accompanied by intestinal cramping but not fever,and it resolves in about a day.

Which of the following statements about diphtheria is FALSE?

Painful swelling and rapidly spreading subcutaneous tissue necrosis is characteristic of a wound infection by

A person comes into the clinic with a wound that is severely inflamed,very painful,and turning black and "bubbly." The diagnosis is leprosy.

Otitis media may lead to dangerous meningitis in children due to infection with

Common sources of Listeria are undercooked meats and vegetables and unpasteurized (eggs/soft cheeses/juices).

Untreated streptococcal pharyngitis may progress to

Mycobacterium leprae infections manifest in two different forms in a patient.What are these? What determines which form the patient will develop?

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant DNA Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Prokaryotes

Characterizing and Classifying Eukaryotes

Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Diseases, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Immune Disorders

Pathogenic Gram-Negative Cocci and Bacilli

Rickettsias, Chlamydias, Spirochetes, and Vibrios

Pathogenic Fungi

Parasitic Protozoa, Helminths, and Arthropod Vectors

Pathogenic DNA Viruses

Pathogenic RNA Viruses

Applied and Environmental Microbiology

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