Questions
2
Weil-Felix reaction is based on sharing of antigens between
Answer: rickettsial antigens and antigens of certain strains of Proteus
3
Agglutination reaction is more sensitive than precipitation for the detection of
Answer: Antigens
4
In which of the following case a large lattice is formed?
Answer: Antigens and antibodies are in optimal proportion
6
Precipitation reaction can be converted into agglutination reaction by coating soluble antigen onto
Answer: all of these
9
Slide agglutination reaction is/are useful for the identification of the culture(s) of
Answer: All of these
10
Amount of various immunoglobulin classes can be measured by
Answer: single diffusion in two dimensions
11
Synthesis of antibodies takes place by which of the following cells?
Answer: B-cells
13
What is the name of the hypervariable region of immunoglobin, which is responsible for its diversity?
Answer: CDR
14
Name the class of immunoglobulin which has a pentameric structure?
Answer: IgM
15
One principal function of the Class I and Class II major histocompatibility complex S proteins is to
Answer: present antigen for recognition by the T-cell antigen receptor
16
Which immunoglobulin is the principal one found in secretions such as milk?
Answer: IgA
17
Who discovered the structure of immunoglobulin by treating it with beta-mercaptoethanol?
Answer: Edelman
18
Which of the following amino acid is found in the hinge region?
Answer: Proline and cysteine
20
Which of these immunoglobulins is present in external secretion?
Answer: IgA
