Question 1

All of the following are characteristics of Campylobacter jejuni except

Accepted Answer

A) it is transmitted through ingestion of contaminated chicken, meat, milk, and water. 
B) it causes fever and a watery to bloody diarrhea. 
C) it infects the stomach. 
D) it produces an enterotoxin called CJT that stimulates diarrhea. 
E) it has gram-negative curved rods with darting motility. 
A) it is transmitted through ingestion of contaminated chicken, meat, milk, and water. 
B) it causes fever and a watery to bloody diarrhea. 
C) it infects the stomach. 
D) it produces an enterotoxin called CJT that stimulates diarrhea. 
E) it has gram-negative curved rods with darting motility. C

Question 2

Select two diseases that involve different arthropod vectors in their epidemiology.Discuss each disease and describe the role of each vector in the life cycle of the pathogen and establishment of the disease.

Accepted Answer

Two diseases that involve different arthropod vectors in their epidemiology are malaria and Lyme disease.

Malaria is a disease caused by the Plasmodium parasite and is transmitted to humans through the bite of an infected female Anopheles mosquito. The role of the mosquito vector in the life cycle of the parasite is crucial for the transmission of the disease. When an infected mosquito bites a human, it injects the parasite into the bloodstream. The parasite then travels to the liver where it matures and reproduces, eventually re-entering the bloodstream and infecting red blood cells. The mosquito becomes infected when it bites an infected human and ingests the parasite, which then goes through a series of developmental stages in the mosquito before it can be transmitted to another human through a subsequent bite.

Lyme disease, on the other hand, is caused by the bacterium Borrelia burgdorferi and is transmitted to humans through the bite of infected black-legged ticks, also known as deer ticks. The role of the tick vector in the life cycle of the bacterium is essential for the transmission of the disease. When an infected tick bites a human, it transfers the bacterium into the bloodstream. The bacterium then spreads to different parts of the body, causing the symptoms of Lyme disease. Ticks become infected with the bacterium when they feed on infected animals, such as mice or deer, and then transmit the bacterium to humans during subsequent feedings.

In both cases, the arthropod vector plays a crucial role in the transmission and establishment of the disease. Understanding the life cycle of the pathogen and the role of the vector is essential for developing effective control and prevention strategies for these diseases.

Question 3

Lyme disease is only seen in people living in Lyme, Connecticut.

Accepted Answer

A) True 
 B)False  False

Question 4

Characteristics of rickettsias include

Accepted Answer

A) obligate parasites requiring host cells for growth. 
B) arthropods serve as life cycle hosts and vectors. 
C) gram-negative coccobacilli. 
D) host cells are required for ATP metabolism. 
E) All of these choices are correct. 
A) obligate parasites requiring host cells for growth. 
B) arthropods serve as life cycle hosts and vectors. 
C) gram-negative coccobacilli. 
D) host cells are required for ATP metabolism. 
E) All of these choices are correct.

Question 5

Yaws, pinta, and bejel are all diseases that

Accepted Answer

A) are slow, progressive skin diseases that can spread to deep tissues. 
B) are sexually transmitted. 
C) are caused by arthropod vectors. 
D) are caused by Vibrio species. 
E) are respiratory tract infections. 
A) are slow, progressive skin diseases that can spread to deep tissues. 
B) are sexually transmitted. 
C) are caused by arthropod vectors. 
D) are caused by Vibrio species. 
E) are respiratory tract infections.

Question 6

Discuss the activities or professions that would increase the risk of contracting Coxiella burnetii.

Accepted Answer

Coxiella burnetii is the bacterium that

Question 7

Which is incorrect regarding Q fever?

Accepted Answer

A) transmitted by lice 
B) Pathogen produces resistant spores. 
C) humans infected from unpasteurized milk and airborne spread 
D) causes fever, muscle aches, rash, and sometimes pneumonia 
E) is a zoonosis 
A) transmitted by lice 
B) Pathogen produces resistant spores. 
C) humans infected from unpasteurized milk and airborne spread 
D) causes fever, muscle aches, rash, and sometimes pneumonia 
E) is a zoonosis

Question 8

Which of the following diseases could be prevented with proper sewage disposal and water purification?

Accepted Answer

A) Vibrio parahaemolyticus gastroenteritis 
B) Vibrio vulnificus gastroenteritis 
C) cholera 
D) Lyme disease 
E) leptospirosis 
A) Vibrio parahaemolyticus gastroenteritis 
B) Vibrio vulnificus gastroenteritis 
C) cholera 
D) Lyme disease 
E) leptospirosis

Question 9

Control of rodent populations is important for preventing

Accepted Answer

A) tick-borne relapsing fever. 
B) ornithosis. 
C) epidemic typhus. 
D) Q fever. 
E) All of these choices are correct. 
A) tick-borne relapsing fever. 
B) ornithosis. 
C) epidemic typhus. 
D) Q fever. 
E) All of these choices are correct.

Question 10

Which of the following is usually the most effective and practical treatment for most cases of bacterial diarrhea?

Accepted Answer

A) delivery of intravenous fluids to rehydrate patients 
B) treatment with antibiotics 
C) oral rehydration with solutions of electrolytes and water 
D) over-the-counter antidiarrheal medications 
A) delivery of intravenous fluids to rehydrate patients 
B) treatment with antibiotics 
C) oral rehydration with solutions of electrolytes and water 
D) over-the-counter antidiarrheal medications

Question 11

Chlamydias and rickettsias are unusual bacteria because they do not have cell walls.

Accepted Answer

A) True 
 B)False

Question 12

Hutchinson's teeth are

Accepted Answer

A) a symptom of untreated Lyme disease. 
B) a symptom of untreated periodontal disease. 
C) a symptom of ANUG. 
D) a symptom of congenital syphilis. 
E) a symptom of congenital Chlamydia trachomatis. 
A) a symptom of untreated Lyme disease. 
B) a symptom of untreated periodontal disease. 
C) a symptom of ANUG. 
D) a symptom of congenital syphilis. 
E) a symptom of congenital Chlamydia trachomatis.

Question 13

Gingivitis is

Accepted Answer

A) primarily caused by anaerobic oral flora. 
B) erosion of tooth enamel causing a lesion. 
C) caused by Streptococcus mutans. 
D) also called NUG. 
A) primarily caused by anaerobic oral flora. 
B) erosion of tooth enamel causing a lesion. 
C) caused by Streptococcus mutans. 
D) also called NUG.

Question 14

The pathogenesis of rickettsial infections often involves infection of

Accepted Answer

A) endothelial lining of blood vessels. 
B) gastrointestinal lining. 
C) dermis of the skin. 
D) stomach mucosa. 
E) urinary tract. 
A) endothelial lining of blood vessels. 
B) gastrointestinal lining. 
C) dermis of the skin. 
D) stomach mucosa. 
E) urinary tract.

Question 15

Which of the following characteristics is NOT true of Treponema pallidum?

Accepted Answer

A) requires mammalian host 
B) microaerophilic 
C) causative agent of syphilis 
D) solely utilizes glycolysis for energy 
E) grows well on chocolate agar in the laboratory 
A) requires mammalian host 
B) microaerophilic 
C) causative agent of syphilis 
D) solely utilizes glycolysis for energy 
E) grows well on chocolate agar in the laboratory

Question 16

Helicobacter pylori causes

Accepted Answer

A) gastritis. 
B) duodenal ulcers. 
C) stomach ulcers. 
D) increased risk for stomach cancer. 
E) All of these choices are correct. 
A) gastritis. 
B) duodenal ulcers. 
C) stomach ulcers. 
D) increased risk for stomach cancer. 
E) All of these choices are correct.

Question 17

An organism found in coastal waters that causes a food infection and gastroenteritis due to a variety of contaminated raw and undercooked seafood

Accepted Answer

A) Chlamydia trachomatis. 
B) Vibrio parahaemolyticus. 
C) Vibrio cholerae. 
D) Campylobacter jejuni. 
E) Helicobacter pylori. 
A) Chlamydia trachomatis. 
B) Vibrio parahaemolyticus. 
C) Vibrio cholerae. 
D) Campylobacter jejuni. 
E) Helicobacter pylori.

Question 18

Lyme disease is caused by __transmitted by ticks.

Accepted Answer

A) Proteus vulgaris 
B) Rickettsia typhi 
C) Rickettsia rickettsii 
D) Borrelia burgdorferi 
E) Leptospira interrogans 
A) Proteus vulgaris 
B) Rickettsia typhi 
C) Rickettsia rickettsii 
D) Borrelia burgdorferi 
E) Leptospira interrogans

Question 19

Chlamydia trachomatis causes

Accepted Answer

A) nongonococcal urethritis (NGU) in males. 
B) cervicitis in females. 
C) congenital and adult inclusion conjunctivitis. 
D) ocular trachoma. 
E) All of these choices are correct. 
A) nongonococcal urethritis (NGU) in males. 
B) cervicitis in females. 
C) congenital and adult inclusion conjunctivitis. 
D) ocular trachoma. 
E) All of these choices are correct.

Question 20

The secondary stage of syphilis

Accepted Answer

A) is when the patient is no longer infectious to others. 
B) occurs within 10 days of the primary stage. 
C) is a time when the pathogen enters and multiplies in the blood. 
D) has no symptoms. 
E) is when gummas develop in tissues. 
A) is when the patient is no longer infectious to others. 
B) occurs within 10 days of the primary stage. 
C) is a time when the pathogen enters and multiplies in the blood. 
D) has no symptoms. 
E) is when gummas develop in tissues.

Exam 21: Miscellaneous Bacterial Agents of Disease

All of the following are characteristics of Campylobacter jejuni except

Select two diseases that involve different arthropod vectors in their epidemiology.Discuss each disease and describe the role of each vector in the life cycle of the pathogen and establishment of the disease.

Lyme disease is only seen in people living in Lyme, Connecticut.

Characteristics of rickettsias include

Yaws, pinta, and bejel are all diseases that

Discuss the activities or professions that would increase the risk of contracting Coxiella burnetii.

Which is incorrect regarding Q fever?

Which of the following diseases could be prevented with proper sewage disposal and water purification?

Control of rodent populations is important for preventing

Which of the following is usually the most effective and practical treatment for most cases of bacterial diarrhea?

Chlamydias and rickettsias are unusual bacteria because they do not have cell walls.

Hutchinson's teeth are

Gingivitis is

The pathogenesis of rickettsial infections often involves infection of

Which of the following characteristics is NOT true of Treponema pallidum?

Helicobacter pylori causes

An organism found in coastal waters that causes a food infection and gastroenteritis due to a variety of contaminated raw and undercooked seafood

Lyme disease is caused by __transmitted by ticks.

Chlamydia trachomatis causes

The secondary stage of syphilis

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 and Gram-Negative Cocci of Medical Importance

The Gram-Positive Bacilli of Medical Importance

The Gram-Negative Bacilli of Medical Importance

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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