1)A posotive tuberculin test indicated: a) active tuberculosis b) The person has

Question

1)A posotive tuberculin test indicated: a) active tuberculosis b) The person has been infected with tubercle bacilli c) hypersensitivity to tuberculoprotein d) None of the above e) Only B and C above

2)The sources of antiserum are: a) Chemical synthesis in the laboratory b) Blood from animal that has developed antibodies to a specific antigen c) Gamma globulin separatd from pooled human blood d) All of the above e) Only B and C above

3)The major advantage of antiserum is: a) It is quickly and easily produced b)It provides circulating antibodies immediately c) It can be administered orally d) All of the above e) none of the above

4)Today antiserum is mainly used for: a) Temporary prevention of certain viral infections b) Neutralization of certain potent bacterial toxins c) Treatment of hepatitis patients d) Only A and B above e) None of the above

5)Essential prperties of an antigen are: a) It must be foreign to the host b) It must be degradable by the host c) It must be a large molecule and possess at least two different determinant groups d) It must posses a three-dimentional or tertiary structure e) All of the above

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

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

Explanation / Answer

1.c) hypersensitivity to tuberculoprotein

2.b) Blood from animal that has developed antibodies to a specific antigen

3.e) none of the above because the advantgae is it is specific to its antigen and antibody

4.b) Neutralization of certain potent bacterial toxins

5. c) It must be a large molecule and possess at least two different determinant groups. it should initiate immune response at first

6. b) Symbiosis

7.a) direct injection

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