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Anti Bodies Online Exam Quiz

Important questions about Anti Bodies. Anti Bodies MCQ questions with answers. Anti Bodies exam questions and answers for students and interviews.

1. Antibodies in the human immune system can identify approximately 10 8 different molecules Which one of the following is correct?

Options

A : This diversity is generated from 10 8 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

2. 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

3. 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

4. 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

5. 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

6. Alum is an effective adjuvant because it

Options

A : disaggregates the antigen.

B : is immunogenic for stem cells

C : is immunogenic for T cells

D : slows the release of antigen

7. Antigenic determinants bind to which portions of an antibody?

Options

A : Variable regions

B : Constant regions

C : Only light chains

D : Only heavy chains

8. Structures of anti-PCP antibody shows that the tight binding of PCP to the antibody is primarily due to

Options

A : hydrophobic forces

B : electrostatic forces.

C : Van der Waals forces.

D : none of these

9. Antibodies can be used

Options

A : for the localization of proteins in the cell

B : for protein purification

C : to catalyze chemical reactions

D : all of the above

10. A secondary antibody is an antibody that

Options

A : has been used in prior experiments

B : is synthetically produced

C : binds to another antibody

D : is produced in boostered animals

1. Monoclonal refers to

Options

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

2. Which species lack immunoglobulin light chains?

Options

A : Camels

B : Humans

C : cows

D : Buffalo

3. Antibodies of the IgG class

Options

A : consist of four subunits

B : are glycoproteins

C : are secreted into the bloodstream

D : all of the above

4. The humoral immune response relies on the production of soluble proteins called

Options

A : antibodies

B : macromolecules

C : lymphocytes

D : none of these

1. Cleavage of an IgG molecule by a specific protease can produce

Options

A : an antigen-binding site and two constant regions

B : two heavy chain-light chain dimers

C : an inactive mixture of oligopeptides

D : two Fab fragments and one Fc fragment

2. ?-Lymphocytes are often called simply

Options

A : B cells

B : T cells

C : T Lymphocytes

D : none of these

3. Type A blood

Options

A : can be used to donate to type AB individuals

B : can be used to donate to type B individuals

C : contains type B antigens on the surface of red blood cells

D : can always be used to donate to an Rh + individual

4. The human IgG class of antibodies is divided into

Options

A : five IgG classes

B : two IgG classes

C : three IgG classes

D : four IgG classes

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

6. Fab fragment has

Options

A : one antigen binding site

B : two antigen binding site

C : one antibody binding site

D : two antibody binding site

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