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1) Quantitatively the largest class of immunoglobulins in humanserum is: a) IgG b) IgA c) IgM d) IgD e)IgE

2) A viral vaccine for the common cold probably would not bebeneficial because: a) A pure culture cannot be frown in tissuecultures b) A multiplicity of viral agents is responsible for thecommon cold c) Immunity is of brief duration d) All of the above e)None of the above

3)A point to note in relation to tuberculosis is: a) It isalways acute b) It is always chronic c) The outcome of the strugglebetween the tubercle bacillus and the hist may not be decided formany years d) The disease is always confined to the lungs e) Noneof the above

4) Characteristics associated with virulent staphylococciinclude: a) Coagulase positive b)Fermentation of mannitol c) Betatype hemolysis on blood agar d)all of the above e) only A and C

5) The basic lesion produced by staphylococci is : a)abscessb)ulcer c)varicose veins d)Impetigo e)none of the above

6)The most common method for the transmission of serum hepatitisis: a) direct injection b) Respiratory secretions c) Fomities d)Contaminated water e) None of the above

7)The direct cause of the symptoms of tetanus is: a)Endotoxinb)Exotoxin c)Toxic effect of the cell d)Hemolysins e)none of theabove

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Casey Durgan
Casey DurganLv2
28 Sep 2019
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43)The causative agent of syphillis: a) Neisseria gonorrheae b)Treponema pallidum c) Chlamydia d) Haemophilus ducreyi e) None ofthe abobe

44)The gonococcus is morphologically similar to: a) Treponemzpallidum b) Meningococcus c) Staphylococcus d) Streptococcus e)None of the above

45)Which of the following disease agents may be tranmittedthrough sexual intercourse? a) Haemophilus ducreyi b) Chlamydia c)Trichomonas vaginalis d) All of the above e) Only A and B above

46)Staphylococci can readily be differential from streptococciin that : a)Gram stain will show different arrangemetsb)streptococci are catalase negative c) staphylococci are catalasenegative d) only A and C e)onlyA and B

47) Characteristics associated with virulent staphylococciinclude: a) Coagulase positive b)Fermentation of mannitol c) Betatype hemolysis on blood agar d)all of the above e) only A and C

48) The basic lesion produced by staphylococci is : a)abscessb)ulcer c)varicose veins d)Impetigo e)none of the above

8)Clostridium perfringens may be found as a part of the normalflora in: a) Mouth b) Intestines c) Lungs d) Urinary tract e)Wounds

10)Foreign substances that induce a specific immune responseafter gaining entrance to the body are termed: a) Antigens b)Antibodies c) Cytolysins d) Complement e) None o the above

11)Essential prperties of an antigen are: a) It must be foreignto the host b) It must be degradable by the host c) It must be alarge molecule and possess at least two different determinantgroups d) It must posses a three-dimentional or tertiary structuree) All of the above

13)quantitatively the largest class of immunoglobulins in humanserum is: a) IgG b) IgA c) IgM d) IgD e)IgE

14)Which of the following statements are applicable to IgMimmunoglobulins: a) They are the antibodies first to be detectedafter injection of an antigen b) In the presence of complement,they are highly lethal to gram-negative bacteria c) They play animportant protective role during the early stages of infection d)All of the above e) None of the above

16)Today antiserum is mainly used for: a) Temporary preventionof certain viral infections b) Neutralization of certain potentbacterial toxins c) Treatment of hepatitis patients d) Only A and Babove e) None of the above

1)Mechanims by which antibiotics kill or inhibit microbialgrowth are: a) Inhibition of cell wall synthesis b) Injury of cellmembrane c) Inhibition of protein synthesis d) Inhibition of DNA orRNA synthesis e) All of the above

2)The semisynthetic methicillin has the advantage of: a) Beingbroad spectrum b) Being inactivated by penicillanse only onprolonged usage c) Not being affected by penicillinase d) All ofthe above e) None of the above

3)Which of the following interfere with cell wall synthesis? a)Chloramphenicol b) Tetracyclines c) Penicillin d) Bacitracin e)Only C and D above

4)A rare but serious complication of chloramphenicol treatmentis: a) Kidney damage b) deafness due to damage of eight cranialnerve c) Anemia due to suppression of bone marrow cells d0 Anemiadue to destruction of circulationg red blood cells e) None of theabove

5)The development of drug resistance in a microorganism may bedue to: a) Abilty of the organism to destroy the abtibioticb)mutation that allows the organism to by-pass the sensitive stepc)Sporulation d)All of the above e) Only A and B above

6)The synthesis of vitamins B and K by enteric bacteria providesan example: a) Commensalism b) Symbiosis c) Opportunism d)Infection e) synegestic effect

7)The normal habotat of Staphylococcus aureus may be: a) Urinarytract b) stomach c) Healthy tissues d) nose, throat, and skin e)Scalp

8)Clostridium perfringens may be found as a part of the normalflora in: a) Mouth b) Intestines c) Lungs d) Urinary tract e)Wounds

9)A disease constantly present in a locality is said to be: a)Endemic b) Epidemic c) Pandemic d) Sporadic e) Reservoir

10)Foreign substances that induce a specific immune responseafter gaining entrance to the body are termed: a) Antigens b)Antibodies c) Cytolysins d) Complement e) None o the above

11)Essential prperties of an antigen are: a) It must be foreignto the host b) It must be degradable by the host c) It must be alarge molecule and possess at least two different determinantgroups d) It must posses a three-dimentional or tertiary structuree) All of the above

12)Based on antigenic differences inH chains, antibodies havebeen divided into the following classes: a) IgG and Iga b) IgM andIgD c0 Ige d) all of the above e)None of the above

13)quantitatively the largest class of immunoglobulins in humanserum is: a) IgG b) IgA c) IgM d) IgD e)IgE

14)Which of the following statements are applicable to IgMimmunoglobulins: a) They are the antibodies first to be detectedafter injection of an antigen b) In the presence of complement,they are highly lethal to gram-negative bacteria c) They play animportantnprotective role during the early stags of infection d)All of the above e) None of the above

15)Antibodies are chiefly produced by: a) Lymphocytes b)Eosinophilis c) Erythrocutes d) Polymorphonuclear neutrophils e)None of the above

16)Today antiserum is mainly used for: a) Temporary preventionof certain viral infections b) Neutralization of certain potentbacterial toxins c) Treatment of hepatitis patients d) Only A and Babove e) None of the above

17)antiserum may be described as: a) Blood serum that containsantibodies b) Blood serum that contains antigens c) Blood serumthat contain an antibiotic d) Bovine blood serum prior to injectionof an antigen e) None of the above

18)The sources of antiserum are: a) Chemical synthesis in thelaboratory b) Blood from animal that has developed antibodies to aspecific antigen c) Gamma globulin separatd from pooled human bloodd) All of the above e) Only B and C above

19)The major advantage of antiserum is: a) It is quickly andeasily produced b)It provides circulationg antibodies immediatelyc) It can be administered orally d) All of the above e) none of theabove

20) A viral vaccine for the common cold probably would not bebeneficial because: a) A pure culture cannot be frown in tissuecultures b) A multiplicity of viral agents is responsible for thecoomon cold c) Immunity is of brief duration d) All of the above e)None of the above

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