Question 1

If left untreated, an infection with ___ can lead to pelvic inflammatory disease and infertility.

Accepted Answer

A) Streptococcus pneumoniae 
B) N.meningitidis 
C) N.gonorrhoeae 
D) Streptotoccus pyogenes 
E) Staphylococcus aureus 
A) Streptococcus pneumoniae 
B) N.meningitidis 
C) N.gonorrhoeae 
D) Streptotoccus pyogenes 
E) Staphylococcus aureus C

Question 2

Most strains of Streptococcus pyogenes produce penicillinase.

Accepted Answer

A) True 
 B)False  False

Question 3

Necrotizing fasciitis is:

Accepted Answer

A) also called impetigo. 
B) possibly caused by antibodies to Group A streptococci that cross-react with body tissues. 
C) associated with strains of Streptococcus pyogenes producing destructive enzymes and toxins. 
D) typically a sequelae of streptococcal pharyngitis. 
E) not treatable with antimicrobic drugs. 
A) also called impetigo. 
B) possibly caused by antibodies to Group A streptococci that cross-react with body tissues. 
C) associated with strains of Streptococcus pyogenes producing destructive enzymes and toxins. 
D) typically a sequelae of streptococcal pharyngitis. 
E) not treatable with antimicrobic drugs. C

Question 4

The instillation of antibiotics in newborn's eyes will prevent ophthalmia neonatorum in newborns.This disease is caused by:

Accepted Answer

A) Neisseria meningitidis. 
B) Staphylococcus aureus. 
C) Streptococcus pyogenes. 
D) Neisseria gonorrhoeae. 
E) Branhamella (Moraxella) catarrhalis. 
A) Neisseria meningitidis. 
B) Staphylococcus aureus. 
C) Streptococcus pyogenes. 
D) Neisseria gonorrhoeae. 
E) Branhamella (Moraxella) catarrhalis.

Question 5

All of the following are associated with subacute endocarditis, except:

Accepted Answer

A) it occurs in patients that have prior heart damage. 
B) it is caused by immune system autoantibodies that attack heart and valve tissue. 
C) oral bacteria get introduced by dental procedures to the blood. 
D) bacteria colonize previously damaged heart tissue resulting in vegetation. 
E) signs and symptoms include fever, heart murmur, and possible emboli. 
A) it occurs in patients that have prior heart damage. 
B) it is caused by immune system autoantibodies that attack heart and valve tissue. 
C) oral bacteria get introduced by dental procedures to the blood. 
D) bacteria colonize previously damaged heart tissue resulting in vegetation. 
E) signs and symptoms include fever, heart murmur, and possible emboli.

Question 6

Which chemical, produced by S.aureus, digests blood clots?

Accepted Answer

A) Coagulase 
B) Penicillinase 
C) Staphylokinase 
D) Hyaluronidase 
E) Toxic shock syndrome toxin 
A) Coagulase 
B) Penicillinase 
C) Staphylokinase 
D) Hyaluronidase 
E) Toxic shock syndrome toxin

Question 7

List three enzymes and four toxins produced by Staphylococcus aureus.For each enzyme and toxin, discuss its effect on patient tissues and how it contributes to virulence of this pathogen.

Accepted Answer

Three enzymes produced by Staphylococcus

Question 8

All the following pertain to Staphylococcus epidermidis infections, except:

Accepted Answer

A) they often from an endogenous source. 
B) they typically occur after insertion of shunts and prosthetic devices. 
C) catheterization can introduce the organism and lead to urinary tract infection. 
D) the organism is coagulase negative. 
E) the organism produces a large number of tissue damaging enzymes and toxins. 
A) they often from an endogenous source. 
B) they typically occur after insertion of shunts and prosthetic devices. 
C) catheterization can introduce the organism and lead to urinary tract infection. 
D) the organism is coagulase negative. 
E) the organism produces a large number of tissue damaging enzymes and toxins.

Question 9

A common food intoxication is caused by enterotoxin-producing strains of:

Accepted Answer

A) Staphylococcus aureus. 
B) Staphylococcus epidermidis. 
C) Staphylococcus saprophyticus. 
D) Streptococcus pyogenes. 
E) Streptococcus agalactiae. 
A) Staphylococcus aureus. 
B) Staphylococcus epidermidis. 
C) Staphylococcus saprophyticus. 
D) Streptococcus pyogenes. 
E) Streptococcus agalactiae.

Question 10

Disease/s caused by Streptococcus pneumoniae include:

Accepted Answer

A) otitis media. 
B) meningitis. 
C) lobar pneumonia. 
D) bronchial pneumonia. 
E) All of the choices are correct. 
A) otitis media. 
B) meningitis. 
C) lobar pneumonia. 
D) bronchial pneumonia. 
E) All of the choices are correct.

Question 11

The bright red rash and fever of scarlet fever is due to:

Accepted Answer

A) enterotoxins. 
B) hemolysins. 
C) toxic shock syndrome toxin. 
D) exfoliative toxin. 
E) erythrogenic toxin. 
A) enterotoxins. 
B) hemolysins. 
C) toxic shock syndrome toxin. 
D) exfoliative toxin. 
E) erythrogenic toxin.

Question 12

Explain what is meant by MRSA, why it is a particular concern to hospitals, and what action hospitals are taking to prevent MRSA spread.

Accepted Answer

MRSA stands for Methicillin-resistant St

Question 13

Staphylococci can be differentiated from streptococci by the:

Accepted Answer

A) Gram stain. 
B) coagulase test. 
C) catalase test. 
D) fermentation of mannitol. 
E) None of the choices are correct. 
A) Gram stain. 
B) coagulase test. 
C) catalase test. 
D) fermentation of mannitol. 
E) None of the choices are correct.

Question 14

Streptococcus pneumoniae is:

Accepted Answer

A) called the meningococcus. 
B) in the viridans group. 
C) a gram positive diplococcus with a capsule. 
D) a pathogen with endotoxin. 
E) All of the choices are correct. 
A) called the meningococcus. 
B) in the viridans group. 
C) a gram positive diplococcus with a capsule. 
D) a pathogen with endotoxin. 
E) All of the choices are correct.

Question 15

All of the following pertain to gonorrhea, except:

Accepted Answer

A) a chancre-type lesion develops at the portal of entry. 
B) it is a reportable infectious disease. 
C) pelvic inflammatory disease (PI
D)  and infertility are complications. 
D) females can have asymptomatic infection. 
E) symptoms include painful urination and discharge. 
A) a chancre-type lesion develops at the portal of entry. 
B) it is a reportable infectious disease. 
C) pelvic inflammatory disease (PI
D)  and infertility are complications. 
D) females can have asymptomatic infection. 
E) symptoms include painful urination and discharge.

Question 16

Which chemical produced by S.aureus is also known as "spreading factor"?

Accepted Answer

A) Coagulase 
B) Penicillinase 
C) Hemolysin 
D) Hyaluronidase 
E) Toxic shock syndrome toxin 
A) Coagulase 
B) Penicillinase 
C) Hemolysin 
D) Hyaluronidase 
E) Toxic shock syndrome toxin

Question 17

Scarlet fever involves:

Accepted Answer

A) high fever. 
B) bright red rash on face, trunk, inner arms and legs, and tongue. 
C) eventual desquamation of epidermis. 
D) septicemia as a complication. 
E) All of the choices are correct. 
A) high fever. 
B) bright red rash on face, trunk, inner arms and legs, and tongue. 
C) eventual desquamation of epidermis. 
D) septicemia as a complication. 
E) All of the choices are correct.

Question 18

All of the following pertain to Neisseria meningitidis, except:

Accepted Answer

A) virulent factors include a capsule, pili, endotoxin, and IgA protease. 
B) it causes serious meningitis. 
C) the reservoir is the nasopharynx of human carriers. 
D) it is more easily transmitted in day care facilities, dorms, and military barracks. 
E) it is a common cause of bacterial pneumonia. 
A) virulent factors include a capsule, pili, endotoxin, and IgA protease. 
B) it causes serious meningitis. 
C) the reservoir is the nasopharynx of human carriers. 
D) it is more easily transmitted in day care facilities, dorms, and military barracks. 
E) it is a common cause of bacterial pneumonia.

Question 19

The most common site where carriers of Staphylococcus aureus carry this pathogen is:

Accepted Answer

A) all over the skin. 
B) under the fingernails. 
C) anterior nares (nostrils). 
D) mouth. 
E) intestines. 
A) all over the skin. 
B) under the fingernails. 
C) anterior nares (nostrils). 
D) mouth. 
E) intestines.

Question 20

An individual with asymptomatic N.gonorrhoeae may not spread the disease.

Accepted Answer

A) True 
 B)False

Exam 18: The Gram-Positive and Gram-Negative Cocci of Medical Importance

If left untreated, an infection with ___ can lead to pelvic inflammatory disease and infertility.

Most strains of Streptococcus pyogenes produce penicillinase.

Necrotizing fasciitis is:

The instillation of antibiotics in newborn's eyes will prevent ophthalmia neonatorum in newborns.This disease is caused by:

All of the following are associated with subacute endocarditis, except:

Which chemical, produced by S.aureus, digests blood clots?

List three enzymes and four toxins produced by Staphylococcus aureus.For each enzyme and toxin, discuss its effect on patient tissues and how it contributes to virulence of this pathogen.

All the following pertain to Staphylococcus epidermidis infections, except:

A common food intoxication is caused by enterotoxin-producing strains of:

Disease/s caused by Streptococcus pneumoniae include:

The bright red rash and fever of scarlet fever is due to:

Explain what is meant by MRSA, why it is a particular concern to hospitals, and what action hospitals are taking to prevent MRSA spread.

Staphylococci can be differentiated from streptococci by the:

Streptococcus pneumoniae is:

All of the following pertain to gonorrhea, except:

Which chemical produced by S.aureus is also known as "spreading factor"?

Scarlet fever involves:

All of the following pertain to Neisseria meningitidis, except:

The most common site where carriers of Staphylococcus aureus carry this pathogen is:

An individual with asymptomatic N.gonorrhoeae may not spread the disease.

The Main Themes of Microbiology

The Chemistry of Biology

Tools of the Laboratory: Methods of Studying Microorganisms

A Survey of Prokaryotic Cells and Microorganisms

A Survey of Eukaryotic Cells and Microorganisms

An Introduction to Viruses

Microbial Nutrition, Ecology, and Growth

An Introduction to Microbial Metabolism: the Chemical Crossroads of Life

Microbial Genetics

Genetic Engineering: a Revolution in Molecular Biology

Physical and Chemical Agents for Microbial Control

Drugs, Microbes, Host--The Elements of Chemotherapy

Microbe-Human Interactions: Infection and Disease

An Introduction to Host Defenses and Innate Immunities

Adaptive, Specific Immunity and Immunization

Disorders in Immunity

Procedures for Identifying Pathogens and Diagnosing Infections

The Gram-Positive Bacilli of Medical Importance

The Gram-Negative Bacilli of Medical Importance

Miscellaneous Bacterial Agents of Disease

The Fungi of Medical Importance

The Parasites of Medical Importance

Introduction to Viruses That Infect Humans: the Dna Viruses

The Rna Viruses That Infect Humans

Environmental Microbiology

Applied and Industrial Microbiology

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