Question 1

Humans are the only hosts of Rickettsia rickettsii.

Accepted Answer

A) True 
 B)False

Question 2

Explain why modern treatment of a peptic ulcer includes administering an antibacterial agent.Discuss the cause.

Accepted Answer

It is now accepted that almost all pepti

Question 3

Small doses of antimicrobial agents are very effective in treating the late stages of Borrelia infection because most of the symptoms result from immune responses.

Accepted Answer

A) True 
 B)False

Question 4

Red mites (chiggers)spread ________ among both humans and rodents.

Accepted Answer

A)  Borrelia recurrentis 
B)  Orientia tsutsugamushi 
C)  Rickettsia rickettsii 
D)  Ehrlichia chaffeensis 
E)  Rickettsia typhi 
A)  Borrelia recurrentis 
B)  Orientia tsutsugamushi 
C)  Rickettsia rickettsii 
D)  Ehrlichia chaffeensis 
E)  Rickettsia typhi

Question 5

What characteristic of Borrelia burgdorferi makes it an unusual bacterium?

Accepted Answer

A)  It is a Gram-negative bacterium that lacks an LPS layer. 
B)  it is a spirochete that is motile. 
C)  it causes damage to multiple organ systems. 
D)  transovarian transmission of the pathogen is rare. 
E)  It is transmitted by an arthropod vector. 
A)  It is a Gram-negative bacterium that lacks an LPS layer. 
B)  it is a spirochete that is motile. 
C)  it causes damage to multiple organ systems. 
D)  transovarian transmission of the pathogen is rare. 
E)  It is transmitted by an arthropod vector.

Question 6

Vibrio vulnificus causes septicemia that is self-limiting and rarely fatal.

Accepted Answer

A) True 
 B)False

Question 7

Sexually transmitted chlamydia is similar to infection with Yersinia pestis in that they both can produce

Accepted Answer

A)  urethritis. 
B)  pelvic inflammatory disease in females. 
C)  conjunctivitis. 
D)  buboes. 
E)  pneumonia. 
A)  urethritis. 
B)  pelvic inflammatory disease in females. 
C)  conjunctivitis. 
D)  buboes. 
E)  pneumonia.

Question 8

Which of the following is a zoonosis caused by a spirochete?

Accepted Answer

A)  bejel 
B)  leptospirosis 
C)  pinta 
D)  syphilis 
E)  yaws 
A)  bejel 
B)  leptospirosis 
C)  pinta 
D)  syphilis 
E)  yaws

Question 9

Which of the following bacteria is responsible for the most common bacterial gastroenteritis in the United States,usually accompanied by frequent,bloody diarrhea?

Accepted Answer

A)  Borrelia recurrentis 
B)  Campylobacter jejuni 
C)  Chlamydophila pneumoniae 
D)  Vibrio cholerae 
E)  Vibrio vulnificus 
A)  Borrelia recurrentis 
B)  Campylobacter jejuni 
C)  Chlamydophila pneumoniae 
D)  Vibrio cholerae 
E)  Vibrio vulnificus

Question 10

The typical lesion of primary syphilis is

Accepted Answer

A)  purulent sore throat. 
B)  a generalized rash. 
C)  the development of buboes in the lymph nodes at the site of infection. 
D)  a painless reddened lesion called a chancre at the site of infection. 
E)  gummas in bones, in nervous tissues, or on the skin. 
A)  purulent sore throat. 
B)  a generalized rash. 
C)  the development of buboes in the lymph nodes at the site of infection. 
D)  a painless reddened lesion called a chancre at the site of infection. 
E)  gummas in bones, in nervous tissues, or on the skin.

Question 11

The reservoir for Orientia tsutsugamushi is (humans/mites/rodents).

Accepted Answer

The answer of The reservoir for Orientia tsutsugamushi is (humans/mites/rodents)....

Question 12

Cholera toxin causes intestinal cells to secrete large amounts of electrolytes,resulting in a very watery diarrhea.

Accepted Answer

A) True 
 B)False

Question 13

What type of cell does Ehrlichia chaffeensis infect in humans?

Accepted Answer

A)  capillary endothelial cells 
B)  B lymphocytes 
C)  neutrophils 
D)  monocytes 
E)  eosinophils 
A)  capillary endothelial cells 
B)  B lymphocytes 
C)  neutrophils 
D)  monocytes 
E)  eosinophils

Question 14

Among adults Chlamydia trachomatis is an STD,but among children who are not sexually active,it can cause ocular infections which may be spread

Accepted Answer

A)  by flies. 
B)  in saliva. 
C)  on hands. 
D)  on hands or by flies. 
E)  by contact with saliva or blood. 
A)  by flies. 
B)  in saliva. 
C)  on hands. 
D)  on hands or by flies. 
E)  by contact with saliva or blood.

Question 15

Ornithosis,caused by ________,is usually a pneumonia-like disease but can sometimes lead to hepatitis or endocarditis.

Accepted Answer

A)  Chlamydia trachomatis 
B)  Chlamydophila pneumoniae 
C)  Chlamydophila psittaci 
D)  Rickettsia prowazekii 
E)  Orientia tsutsugamushi 
A)  Chlamydia trachomatis 
B)  Chlamydophila pneumoniae 
C)  Chlamydophila psittaci 
D)  Rickettsia prowazekii 
E)  Orientia tsutsugamushi

Question 16

The rash of spotted fever rickettsiosis is the result of

Accepted Answer

A)  capillary damage. 
B)  infection of skin cells. 
C)  allergic reaction to the vector. 
D)  production of a toxin that causes inflammation. 
E)  infection of sebaceous glands. 
A)  capillary damage. 
B)  infection of skin cells. 
C)  allergic reaction to the vector. 
D)  production of a toxin that causes inflammation. 
E)  infection of sebaceous glands.

Question 17

How can Leptospira interrogans be distinguished from other spirochetes?

Accepted Answer

A)  It stains purple with the Gram stain. 
B)  One end of the bacterium looks like a question mark. 
C)  It is highly motile. 
D)  It can be found in multiple locations in the body. 
E)  It cannot be cultured on laboratory media. 
A)  It stains purple with the Gram stain. 
B)  One end of the bacterium looks like a question mark. 
C)  It is highly motile. 
D)  It can be found in multiple locations in the body. 
E)  It cannot be cultured on laboratory media.

Question 18

A disease of birds that can be transmitted to humans is (campylobacteriosis/Lyme/ornithosis).

Accepted Answer

The answer of A disease of birds that can be...

Question 19

Relapsing fever is characterized by recurring episodes of fever and septicemia separated by symptom-free intervals.What causes this pattern?

Accepted Answer

Relapsing fever is caused by Borrelia re

Question 20

All stages of Ixodes,the vector for Lyme disease,may feed on humans.

Accepted Answer

A) True 
 B)False

Exam 21: Rickettsias, Chlamydias, Spirochetes, and Vibrios

Humans are the only hosts of Rickettsia rickettsii.

Explain why modern treatment of a peptic ulcer includes administering an antibacterial agent.Discuss the cause.

Small doses of antimicrobial agents are very effective in treating the late stages of Borrelia infection because most of the symptoms result from immune responses.

Red mites (chiggers)spread ________ among both humans and rodents.

What characteristic of Borrelia burgdorferi makes it an unusual bacterium?

Vibrio vulnificus causes septicemia that is self-limiting and rarely fatal.

Sexually transmitted chlamydia is similar to infection with Yersinia pestis in that they both can produce

Which of the following is a zoonosis caused by a spirochete?

Which of the following bacteria is responsible for the most common bacterial gastroenteritis in the United States,usually accompanied by frequent,bloody diarrhea?

The typical lesion of primary syphilis is

The reservoir for Orientia tsutsugamushi is (humans/mites/rodents).

Cholera toxin causes intestinal cells to secrete large amounts of electrolytes,resulting in a very watery diarrhea.

What type of cell does Ehrlichia chaffeensis infect in humans?

Among adults Chlamydia trachomatis is an STD,but among children who are not sexually active,it can cause ocular infections which may be spread

Ornithosis,caused by ________,is usually a pneumonia-like disease but can sometimes lead to hepatitis or endocarditis.

The rash of spotted fever rickettsiosis is the result of

How can Leptospira interrogans be distinguished from other spirochetes?

A disease of birds that can be transmitted to humans is (campylobacteriosis/Lyme/ornithosis).

Relapsing fever is characterized by recurring episodes of fever and septicemia separated by symptom-free intervals.What causes this pattern?

All stages of Ixodes,the vector for Lyme disease,may feed on humans.

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 Positive Bacteria

Pathogenic Gram-Negative Cocci and Bacilli

Pathogenic Fungi

Parasitic Protozoa, Helminths, and Arthropod Vectors

Pathogenic DNA Viruses

Pathogenic RNA Viruses

Applied and Environmental Microbiology

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