Question62:-Which of the following Immunodeficiency disorder/disorders are due to
combined B and T cell defects?

(!) Digeorge Syndrome

(॥) Ataxia telangiectasia

(111) Nezelof Syndrome

(IV) Chronic granulomatous diseases

A:-(l) and (Il)

B:-(1), (Il) and (III)

C:-(Il) and (III)

D:-(IIl) and (IV)

Correct Answer:- Option-C
Question63:-Nagler reaction is example of ?

A:-Precipitation reaction

B:-Compliment fixation test

C:-Agglutination reaction

D:-Neutralization test

Correct Answer:- Option-D

Question64:-Which of the following statements are wrong regarding Toll like
receptors (TLRs)?

(|) ۲٢۳-2 binds to lipoteichoic acid of gram positive bacterial cell wall

(॥) TLR-9 binds to bacterial DNA

(111) TLR-3 binds to flagella of bacteria

(IV) TLR-5 binds to ss RNA of viruses

A:-(l) and (III)
B:-(Il) and (III)
C:-(1) and (IV)
D:-(IIl) and (IV)
Correct Answer:- Option-D
Question65:-Find out the correct statement regarding Affinity and Avidity?

A:-Affinity refers to affinities of all the binding sites when multivalent antibody
reacts with a complex antigen carrying multiple epitopes

B:-Avidity decreases with time
C:-Affinity is the better indicator of strength of an antigen antibody reaction
D:-IgM has a low affinity than IgG
Correct Answer:- Option-D
Question66:-Which of the following represents the T cell area of the lymph node?
A:-Primary lymphoid follicles
B:-Secondary lymphoid follicles
C:-Para cortical area