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Practice exam 3 lec

QuestionAnswer
Which of the following does not contribute to a pathogen's invasiveness? toxins
Viruses that have reverse transcriptase are in the Hepadnaviridae and Retroviridae
Antibiotics can lead to septic shock if used to treat Gram-negative bacterial infections
Which of the following is an effect of opsonization? Increased adherence of host phagocytes to microorganisms
What type of infection can be caused by septicemia? systemic infection
A sexually transmitted disease. direct contact
Koch's postulates do not apply to all diseases because All diseases aren't caused by microorganisms
Pseudomonas aeruginosa produces a two-part exotoxin. The most likely pathologic effect of this toxin is Inhibition of protein synthesis
Normal microbiota (normal flora) provide protection from infection by which of the following: All of the above
An example of a latent virus infection is: shingles
Which of the following may be used for adherence: all of the above
An example of a latent viral infection is cold sores
Endotoxins are Part of the gram-negative cell wall
Nosocomial infections are most often caused by Escherichia coli
After ingesting a pathogen, lysosomal enzymes produce which of the following all of the above
Which of the following is true about viruses? all of the above
Which of the following diseases is not spread by droplet (aerosol) infection? botulism
A needlestick is an example of which portal of entry? parenteral
Symptoms of protozoan and helminthic diseases are due to all of the above
All of the following statements about biological transmission are true except houseflies are one of the most important vectors
In response to the presence of endotoxin, phagocytes secrete tumor necrosis factor. This causes A decrease in blood pressure
Vasodilation is caused by all of the following except complement
Which of the following is true about Viruses: cannot multiply outside host cell
Which of the following is not characteristic of inflammation? fever
Lysozyme is found in all of the above
A nosocomial infection is acquired during the course of hospitalization
Which of the following does not cause vasodilation? lysozymes
Which of the following is not an effect of histamine? fever
Which of the following is (are) method(s) of avoiding host antibodies all of the above
All of the following occur during inflammation. What is the first step? vasodilation
The most common route of accidental AIDS transmission to health-care workers is needlestick
The function of the "ciliary escalator" is to remove microorganisms from the respiratory tract
Which of the following is not a chemical factor to protect skin and mucous membrane from infection? Mucus
Which of the following is a not potential reservoir of infection All of the above may be a reservoir
A cold transmitted by a facial tissue fomite
The science that deals with when diseases occur and how they are transmitted is called Epidemiology
Which of the following is (are) a function(s) of inflammation? all of the above
A viral species is a group of viruses that Have the same genetic information and ecological niche
All of the following are communicable diseases except botulism
Which of the following definitions is correct? all of the above are correct
Which of the following is not considered entry via the parenteral route? inhalation
The most frequently used portal of entry for pathogens is the mucous membranes of the respiratory tract
Botulism is caused by an exotoxin, therefore it could easily be prevented by boiling food prior to consumption
Viruses that infect bacteria are called: bacteriophages
Pseudomonas bacteria colonized the bile duct of a patient following his liver transplant surgery. This is an example of nosocomial infection
Which method cannot be used to culture viruses in a laboratory? nutrient agar culture media
Bacterial enzymes such as catalase and superoxide dismutase can protect bacteria from: Phagocytic digestion
Which of the following is involved in resistance to parasitic helminths? eosinophils
Which of the following statements is true: all of the above are true
Symptoms of disease differ from signs of disease in that symptoms are changes felt by the patient
Nonspecific resistance is the body's defenses against any kind of pathogen
"Margination" refers to: adherence of phagocytes to the lining of blood vessels
An oncogenic RNA virus must have which of the following enzymes? Reverse transcriptase
Which of the following definitions is incorrect? Epidemic - fraction of the population having a disease at a specified time
Which of the following statements about exotoxins is generally true: all of the above are true
Created by: emmmx0x