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Spring 2010

        Help!  

Question
Answer
Koch's postulates don't apply to all diseases because   All diseases aren't caused by microorganisms  
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Mechanical transmission differs from biological transmission in that mechanical transmission   doesn't involve specific diseases  
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What type of infection can be caused by septicemia   Systemic infection  
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Koch observed Bacillus anthracis multiplying in the blood of cattle. What is this condition called?   Septicemia  
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One effect of washing regularly with antibacterial agents is the removal of normal microbiota. This can result in   Increased susceptibility to disease  
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Whis of the following is a fomite? a)pus b) insects c)a hypodermic needle d)water e)droplets from sneeze   c) a hypodermic needle  
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symptoms of disease differ from signs of disease in that symptoms   are changes felt by the patient  
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how would an "endemic level" be shown on a graph   a straight line which represents a LOW amount of occurances  
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Influenza tranmitted by an unprotected sneeze is a example of   droplet transmission  
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Pseudomonas bacteria colonized the bile duct of a patient following his liver transplant surgery. This is an example of   Nosocomial Infections  
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The most frequently used portal of entry for pathogens is the   mucous membrans of the respiratory tract  
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The ID50 is a   does that will cause an infection in 50% of the test population  
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which of the following statements about exotoxins is generally not true   they are not destroyed by heat  
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All of the following are methods of avoiding host antibodies except   membrane-disrupting toxins  
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which of the following is not considered entry via the parenteral route   hair follicle  
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Botulism is caused by an exotoxin, therefore it could easily be prevented by   Boiling food prior to consumption  
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A needlestick is a example of which portal of entry   parenteral route  
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Antibiotics can lead to septic shock if used to treat   Gram-negative bacterial infections  
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The administration of amplicillin before surgery   decreases the risk of staphylococcal infection  
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in response to the presence of endotoxin, phagocytes secrete tumor necrosis factor. This causes   a decrease in blood pressure  
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Which organism most easily causes an infection   Legionella pheumophila ID50-1  
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Which of the following is not a cytopathic effect of viruses   None of the above  
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Which of the following organsims doesn't produce an exotoxin   Salmonella typhi  
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Endotoxins are   part of the gram-negative cell wall  
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Which of the following is not a membrane disrupting toxin   A-B toxin  
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Cytopahtic effects are changes in host cells due to   Viral infections  
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Which of the following does not contribute to a pathogen's invasiveness   toxins  
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a sexually transmitted disease is an example of   direct contact  
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All of the following statements about biological transmission are true except   houseflies are an important vector  
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a nosocomial infection is   acquired during the course of hospitalization  
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Innate immunity is   the body's ability to ward off diseases  
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Whihc of the following exhibits the highest phagocytic activity   basophils  
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Which of teh following is found normally in serum   complement  
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Which of the following is not an effect of complement activation   Interfence with viral replication  
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which of the following is not true of fixed macrophages   they are mature monocytes  
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Chill is a sign that   Body temperature is rising  
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the classical pathway for complement activation is initiated by   Antigen-antibody reactions  
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Vasodilation is caused by all of the following except   Complement  
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Activation of C5-C9 results in   Leakage of cell contents  
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Which of the following is involved in resistance to parasitic helminths   Eosinophil  
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Which one of the following does not belong with the others   natural killer cell  
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All of the following occur during inflammation. What is the first step?   Vasodilation  
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Chlamydia trachomatis can live inside white blood cells beacause it   Inhibits formation of phagolysosomes  
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Bacterial enzymes such as catalase and superoxide dismutase can protect bacteria from   Phagocytic digestion  
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Which of the following is an effect of opsoization   Increased adherence of phagocytes to microorganisms  
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The function of the "ciliary escalator" is to   Remove microorganisms from the lower respiratory tract  
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Type of immunity resulting from vaccination   Artificially acquired passive immunity  
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The specificity of an antibody is due to   The variable portions of the H and L chains  
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The best definition of an antigen is   A chemical that elicits an antibody response and can combine with these antibodies  
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Patients with an inherited type of colon cancer called familial adenomatous polyposis have a mutation in the gene that codes for   Apoptosis  
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Antigens coated with antibodies are susceptible to   Phagocytosis  
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Chemical signals sent between leukocytes are   interleukins  
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All of the following are true about natural killer cells except   The are stimulated by an antigen  
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In figure 17.2 which areas are similar for all IgG antibodies   c and d  
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In figure 17.2 which areas are different for all IgM antibodies   a and b  
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In figure 17.2 what can attach to a host cell   e  
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Plasma cells are activated by an   antigen  
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The antibodies found in mucus, saliva, and tears are   IgA  
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The antibodies found on B cells are   IgM  
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The antibodies that can bind to large parasites are   IgE  
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Immunity resulting from recovery from mumps   Naturally acquired active immunity  
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Newborns' immunity due to the transfer of antibodies across the placenta   Naturally acquired passive immunity  
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T cells are actived by   Interaction between CD4 and MHC II  
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Which of teh following is not normally used in a vaccine   Antibodies  
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A reaction between an antibody and soluble antigen-forming lattices is called a(n)   Precipitation reaction  
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An inderirect version of which test using antihuman globulin may be used to detect patient's antibodies against Treponema pallidum   Immunofluorescence  
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What type of vaccine is live measles virus   attenuated whole-agent vaccine  
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Which of the following is a pregnancy test used to find the fetam hormone HCG in a woman's urine using anti HCG and latex spheres   Passive agglutination reaction  
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In Table 18.1 who probably had the disease   A and B  
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In a direct ELISA test, what are you looking for in the patient   Antigen  
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Live polio virus can be used in an   Attenuated whole-agent vaccine  
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Hypersensitivity is due to   An altered immune response  
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Graft-versus-host disease will most likely be a complication of   A bone marrow transplant  
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A hypersensitivity reaction occurs   On a second or subsequent exposure to an antigen  
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Hemolytic disease of the newborn can result from   An Rh- mother with an Rh+ fetus  
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Treatment with certain drugs to reduce transplant rejection can cause   Immunosuppression  
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Which of these causes of glomerulonephritis leads to all the others   Antibodies against streptococcus  
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MMR vaccine contains hydrolyzed gelatin. A person receiving this vaccine could develop an anaphylactic reaction if the person has   antibodies against gelatin  
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In rheumatoid arthritis, IgM, IgG, and complement deposit in joints. This is an example of   Immune complex autoimmunity  
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Clinical AIDS is diagnosed when   The CD4 Tcell count is <200/mm3  
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Hay fever is an example of   Type I hypersensitivity  
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Transfusion reactions are an example of   Type II hypersensitivity  
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All of the following statements about type I hypersensitivites are true except   They are cell meidated  
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which of the following is not an immune complex disease   Hemolytic disease of the newborn  
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Cancer cells may escape the immune system because   Tumor cells shed their specific antigens  
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Autoimmunity is due to   IgG and IgM antibodies  
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The chemical mediators of anaphylaxis are   Found in basophils and mast cells  
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Which antibodies will bin the serum of a person with blood type B, Rh-   Anti A, Anti Rh  
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Hepatitis B virus surface antigen can be used in a   Subunit vaccine  
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Which of the following uses red blood cells as the indicator   complement fixation  
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Which of the following is a test to determine patient's blood type by mixing patient's red blood cells   Direct agglutination reaction  
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A test used to identify antibodies against Treponema pallidum in a patient is the   Indirect fluorescent antibody test  
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A reaction between antibody and particulate antigen is called an   Agglutination reaction  
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