The binding site for complement on the IgG molecule is in the________________?
(A) VL domian
(B) CL domian
(C) CH1 domian
(D) CH2 domian
The immediate type of hypersensitivity in which histamine doses not play a major role is______________?
(A) Urticaria
(B) Asthma
(C) Anaphylaxis
(D) Arthus reaction
Detergents used to disinfect dental instruments in the office kill bacteria by interfering with functional of the cell______________?
(A) wall
(B) nucleus
(C) membrane
(D) Capsule
Endotoxins differ from exotoxins in that endotoxins______________?
(A) are proteins
(B) are heat labile
(C) are highly antigenic
(D) activate complement by the alternate pathway
Rideal Walker test is used to determine the efficiency of the_____________?
(A) Disinfectant
(B) Moist heat sterilisation
(C) Antibiotics
(D) Dry heat sterilization
All are not true for cultivation of anaerobic organisms except_______________?
(A) Incubator
(B) anaerobic jar
(C) Refrigerator
(D) Centrifuge
Multiple drug resistance of bacteria depends on which of the following_______________?
(A) Resistance transfer factor (RTF)
(B) Colicigenic factor (Col)
(C) Fertility factor (F+)
(D) All of the above
The major antiseptic value of soap lies in its ability to_____________?
(A) Kill mircobes
(B) Remove microbes
(C) Inhibit microbial growth
(D) Dehydrate microbial cells
Which of the following antibacterial substance is present in eggs and saliva ?
(A) Lysozyme
(B) Secretozyme
(C) Albumin
(D) Isozyme