6. Which of the following are responsible for immune specificity?

A. Antigens
B. Antibodies
C. T lymphocytes
D. Macrophage

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7. Which species lack immunoglobulin light chains?

A. Camels
B. Humans
C. cows
D. Buffalo

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8. Monoclonal refers to

A. a single clone of antibody-producing cells
B. all the antibody molecules which are identical
C. the binding with same antigenic site with identical binding affinities
D. all of the above

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9. β-Lymphocytes are often called simply

A. B cells
B. T cells
C. T Lymphocytes
D. none of these

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10. IgE provides

A. immunity against some parasites
B. complement killings of the cells and phagocytosis
C. secretions in the body
D. all of the above

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