Question 1

Interferon is a substance produced by the body that inhibits viral replication.Interferon accomplishes this task by:

Accepted Answer

A) digesting the virus that is attempting to attach to the host cell. 
B) destroying the host cell before the virus can attach and replicate. 
C) binding to surface receptors that stimulate the cell to synthesize enzymes that inhibit viral replication over several days. 
D) stimulating platelets to produce b-lysins. 
A) digesting the virus that is attempting to attach to the host cell. 
B) destroying the host cell before the virus can attach and replicate. 
C) binding to surface receptors that stimulate the cell to synthesize enzymes that inhibit viral replication over several days. 
D) stimulating platelets to produce b-lysins.

Question 2

After attachment to host cells, a pathogen may use the following mechanisms to establish itself and cause disease except:

Accepted Answer

A) uses lactoferrin for iron. 
B) produces an IgA protease that degrades the IgA at mucosal surfaces. 
C) produces lysozyme to kill the host cell. 
D) circumvents host antibodies by shifting key cell-surface antigens. 
A) uses lactoferrin for iron. 
B) produces an IgA protease that degrades the IgA at mucosal surfaces. 
C) produces lysozyme to kill the host cell. 
D) circumvents host antibodies by shifting key cell-surface antigens.

Question 3

The major constituents of the adaptive or specific immune response are:

Accepted Answer

A) neutrophils. 
B) macrophages. 
C) monocytes. 
D) lymphocytes. 
A) neutrophils. 
B) macrophages. 
C) monocytes. 
D) lymphocytes.

Question 4

A patient with an indwelling catheter develops a fever and lethargy.In addition, the urine in the catheter bag has turned a brownish color and smells foul, which suggests an infection is present.What type of infection does this describe?

Accepted Answer

A) Opportunistic 
B) Iatrogenic 
C) Pathogenic 
D) Parasitic 
A) Opportunistic 
B) Iatrogenic 
C) Pathogenic 
D) Parasitic

Exam 2: Host-Parasite Interaction

Interferon is a substance produced by the body that inhibits viral replication.Interferon accomplishes this task by:

After attachment to host cells, a pathogen may use the following mechanisms to establish itself and cause disease except:

The major constituents of the adaptive or specific immune response are:

A patient with an indwelling catheter develops a fever and lethargy.In addition, the urine in the catheter bag has turned a brownish color and smells foul, which suggests an infection is present.What type of infection does this describe?

Bacterial Cell Structure, Physiology, Metabolism, and Genetics

The Laboratory Role in Infection Control

Control of Microorganisms

Performance Improvement in the Microbiology Laboratory

Specimen Collection and Processing

Microscopic Examination of Materials From Infected Sites

Use of Colony Morphology for the Presumptive Identification of Microorganisms

Biochemical Identification of Gram-Negative Bacteria

Immunodiagnosis of Infectious Diseases

Applications of Molecular Diagnostics

Antimicrobial Agent Mechanisms of Action and Resistance

Antimicrobial Susceptibility Testing

Staphylococci

Streptococcus, Enterococcus, and Other Catalase-Negative, Gram-Positive Cocci

Aerobic Gram-Positive Bacilli

Neisseria Species and Moraxella Catarrhalis

Haemophilus and Other Fastidious Gram-Negative Bacilli

Enterobacteriaceae

Vibrio, Aeromonas, Plesiomonas, and Campylobacter Species

Nonfermenting and Miscellaneous Gram-Negative Bacilli

Anaerobes of Clinical Importance

The Spirochetes

Chlamydia, Rickettsia and Similar Organisms

Mycoplasma and Ureaplasma

Mycobacterium Tuberculosis and Nontuberculous Mycobacteria

Medically Significant Fungi

Diagnostic Parasitology

Clinical Virology

Agents of Bioterror and Forensic Microbiology

Biofilms: Architects of Disease

Upper and Lower Respiratory Tract Infections

Skin and Soft Tissue Infections

Gastrointestinal Infections and Food Poisoning

Infections of the Central Nervous System

Bacteremia and Sepsis

Urinary Tract Infections

Genital Infections and Sexually Transmitted Diseases

Infections in Special Populations

Zoonotic Diseases

Ocular Infections

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