#1

Question 1

Acidic pH in the adult vagina is protective against microbial infection

Answer 1

True

Question 2

Th1 cells produce TNF-P to activate cellular immune response .

Answer 2

False

Question 3

MHC can be used in paternity analysis because of its high polymorphism

Answer 3

True

Question 4

T cell with TCRs capable of binding with low affinity to MHC will receive negative selection

Answer 4

False

Question 5

Natural Killer cells are large granular lymphocytes which are CD3_ , CD16+ ,CD56_

Answer 5

False

Question 6

Cavalier-Smith’s Classification is molecular classification ,which divides all living structures of the earth into six kingdoms namely :Bacteria , protozoa , Chromista ,Plantae ,Fungi ,and Animalia

Answer 6

True

Question 7

Coldagglutinins in sera of bacterial pneumonia patients agglutinate human O red cells at 4°C

Answer 7

True

Question 8

In enteric fever there is mononuclear cells infiltration

Answer 8

True

Question 9

Shigella enterotoxin “ShET” is found essentially in S.dysenteriae type1

Answer 9

False

Question 10

Non typhoidal salmonella are mainly water-borne

Answer 10

False

Question 11

Typhoidal salmonella is most commonly associated with animal food products such as milk and eggs

Answer 11

False