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Home Biochemistry Anti Bodies Comments

  • Question
  • Papain digest IgG into


  • Options
  • A. two Fab fragments and one Fc fragment
  • B. three Fab fragments and two Fc fragments
  • C. two Fab fragments and two Fc fragments
  • D. three Fab fragments and three Fc fragments

  • Correct Answer
  • two Fab fragments and one Fc fragment 


  • Anti Bodies problems


    Search Results


    • 1. Each IgA antibody molecule consists of

    • Options
    • A. four polypeptide chain and has two antigen binding site
    • B. two polypeptide chain and has one antigen binding site
    • C. three polypeptide chain and has two antigen binding site
    • D. two polypeptide chain and has two antigen binding site
    • Discuss
    • 2. Which of the following are responsible for immune specificity?

    • Options
    • A. Antigens
    • B. Antibodies
    • C. T lymphocytes
    • D. Macrophage
    • Discuss
    • 3. Which of those immunoglobulin classes is mainly found in external secretions?

    • Options
    • A. Ig A
    • B. Ig D
    • C. Ig M
    • D. IgE
    • Discuss
    • 4. Fab fragment has

    • Options
    • A. one antigen binding site
    • B. two antigen binding site
    • C. one antibody binding site
    • D. two antibody binding site
    • Discuss
    • 5. Monoclonal antibodies were first produced by

    • Options
    • A. Georges Kohler and Cesar Milstein
    • B. Sarkar and Sommer
    • C. Selman Waksman
    • D. Edward Jenner and Louis Pasteur
    • Discuss
    • 6. Antibodies in the human immune system can identify approximately 108 different molecules Which one of the following is correct?

    • Options
    • A. This diversity is generated from 108 different immunoglobin genes
    • B. Many of these molecules are self-antigens
    • C. Most of these antibodies recognize proteins
    • D. Most of these antibodies recognize small organic molecules
    • Discuss
    • 7. A polyclonal antibody response

    • Options
    • A. is produced only in response to polymeric antigens
    • B. is produced by several B cells recognizing different pitopes on the same antigen
    • C. occurs during the lag phase of the immune response
    • D. violates clonal selection
    • Discuss
    • 8. The immunoglobulin fold is

    • Options
    • A. found only in IgG molecules
    • B. a ?-barrel composed of a three- and a four-stranded antiparallel ?-sheet
    • C. both (a) and (b)
    • D. found six times in the IgG molecule
    • Discuss
    • 9. The main function of antibodies is to

    • Options
    • A. kill all the foreign bodies
    • B. generate antigens, thus conferring immunization
    • C. protect the circulatory system
    • D. chemically combine with the antigen which induces it, inactivate the antigen and protect the body from disease
    • Discuss
    • 10. IgE provides

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


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