Humoral Immunity

Q. Artificially acquired passive immunity refers to immunity from:

1. Transfer of antibodies from mother to foetus across the placenta
2. Injection of the antigens as a vaccine
3. Intravenous(IV) injection of immunoglobulins
4. Recognition of an antigen by T cells

Q.

Which of the following produce antibodies?

1. Macrophages

2. Mast cells

3. Lymphocytes

4. Fibroblasts

Q.

Passive immunity can be obtained by injecting:

1. Antibodies

2. Antibiotics

3. Antigens

4. Vaccination

Q. What is interferon and lymphokine?

Q.

What are plasma cells?

Q. Which among the following antibodies in blood have the highest molecular weight?

1. IgM
2. IgD
3. IgA
4. IgG

Q. Monoclonal antibodies and polyclonal antibodies are produced by

1. T-memory cells
2. Memory cells of B-lymphocytes
3. NK -cells
4. Plasma cells of B-lymphocytes

Q. The figure given below shows an antibody molecule. Name the parts A, B and C.

1. A-Antigen binding site, B-Heavy chain, C-Light chain
2. A-Antibody binding site, B-Light chain, C-Heavy chain
3. A-Antigen binding site, B-Short chain, C-Long chain
4. A-Antibody binding site, B-Long chain, C-Short chain
   

Q. Which of the following is true about the humoral immunity

1. Humoral immunity is provided by B-cells
2. Antibodies are secreted by the B-cells
3. Antibodies into the blood stream
4. All of the above

Q. Assertion (A): Damaged lymphocytes do not produce antibodies against antigens.​
Reason(R): Injection of dead pathogens causes passive immunity.​
​

1. Assertion(A) is true and reason(R) is false.​
2. Assertion(A) is false and reason(R) is false.​
3. Both assertion(A) and reason(R) are true, but reason(R) is not the correct explanation for assertion.​
4. Both assertion(A) and reason(R) are true and reason(R) is the correct explanation for assertion(A). ​

Q.

Damage to the thymus in a child may lead to:

1. Loss of antibody-mediated immunity

2. A reduction in hemoglobin content of blood

3. Loss of cell-mediated immunity

4. A reduction in stem cell production

Q. ABO blood groups of Landsteiner are classified on the basis of

1. serum
2. antigens (glycoproteins)
3. antibodies
4. genes

Q.

The cell-mediated immunity inside the human body is carried out by:

1. Thrombocytes

2. T-lymphocytes

3. Erythrocytes

4. B-lymphocytes

Q. Differentiate the following:
$a)$ Active immunity and passive immunity.

Q.

Describe the structure of an antibody.

Q. Which of the following is true about the humoral immunity

1. Humoral immunity is provided by B-cells
2. Antibodies are secreted by the B-cells
3. Antibodies into the blood stream
4. All of the above

Q.

The part of antibody molecule which acts asa binding site for specific related antigen is

1. Complete heavy chain

2. Complete light and heavy chain

3. Variable parts of light and heavy chains

4. Complete light chain

Q. Monoclonal antibodies are

1. Single parent type that attack many antigens
2. Single parent type and attack specific antigen
3. Various parent type and attack many antigens
4. Various parent type and attack single antigen

Q. are produced by B cells and this response is known as humoral immunity.

1. Antigens
2. Cytokines
3. Neutrophils
4. Antibodies

Q. What are antibiotics? Name the scientist who first discovered antibiotics. Also give name of this antibiotics.

Q.

what is cell mediated immune response??

Q.

State whether true or false:
Antibodies produced by B cells can attack both extracellular and intracellular pathogens.

1. True

2. False

Q. Give one significant difference between each of the following pair.
Humoral immunity and cell mediated immunity.

Q. Factors present on the surface of RBCs which are related to heredity are

1. Blood groups
2. Haemoglobin
3. Antigens
4. Antibodies.

Q. Cells of the immune system responsible for the humoral response to a pathogen include all of the following except.

1. Memory B cells
2. Helper T cells
3. Killer T cells
4. Plasma B cells
5. Macrophages

Q. Which of the following statements about antibody molecules is not true?

1. All are proteins
2. All are immunoglobulins
3. All have light and heavy chains
4. All are produced by T-cells

Q. what are "phagocytic cells" ?

Q. Which of the following statements is correct with respect to immunity?

1. Rejection of graft is the function of B-lymphocytes
2. Antibodies are carbohydrate molecules, with each having four chains
3. Preformed antibodies need to be injected to treat the bite by a viper snake
4. The antibodies against smallpox pathogen are produced by T-lymphocytes

Q. Body cells infected by viruses are destroyed mostly by

1. IgA
2. Phagocytes
3. Natural antibodies
4. Natural Killer cells

Q. Write any two points of difference between B-Lymphocytes and T-Lymphocytes.