Anonymous asked in Science & MathematicsBiology · 7 years ago

1. Essential properties of an antigen are:?

a. It must be foreign to the host

b. It must be degradable by the host

c. It must be a large molecule and possess at least two different determinant groups

d. It must possess a three-dimensional or tertiary structure

e. All of the above

2. Based on antigenic differences in H chains, antibodies have been divided into the following classes:

a. IgG and IgA

b. IgM and IgD

c. IgE

d. All of the above

e. None of the above

3. Quantitatively the largest class of immunoglobulins in human serum is:

a. IgG

b. IgA

c. IgM

d. IgD

e. IgE

4. Which of the following statements are applicable to IgM immunoglobulins:

a. They are the antibodies first to be detected after injection of an antigen

b. In the presence of complement, they are highly lethal to gram-negative bacteria

c. They play an important protective role during the early stages of infection

d. All of the above

e. None of the above

5. Antibodies are chiefly produced by:

a. Lymphocytes

b. Eosinophilis

c. Erythrocytes

d. Polymorphonuclear neutrophils

e. None of the above

6. Today antiserum is mainly used for:

a. Temporary prevention of certain viral infections

b. Neutralization of certain potent bacterial toxins

c. Treatment of hepatitis patients

d. Only A and B above

e. None of the above

7. Antiserum may be described as:

a. Blood serum that contains antibodies

b. Blood serum that contains antigens

c. Blood serum that contain an antibiotic

d. Bovine blood serum prior to injection of an antigen

e. None of the above

8. The sources of antiserum are:

a. Chemical synthesis in the laboratory

b. Blood from animal that has developed antibodies to a specific antigen

c. Gamma globulin separated from pooled human blood

d. All of the above

e. Only B and C above

9. The major advantage of antiserum is:

a. It is quickly and easily produced

b. It provides circulating antibodies immediately

c. It can be administered orally

d. All of the above

e. None of the above

10. A viral vaccine for the common cold probably would not be beneficial because:

a. A pure culture cannot be frown in tissue cultures

b. A multiplicity of viral agents is responsible for the common cold

c. Immunity is of brief duration

d. All of the above

e. None of the above

1 Answer

  • 7 years ago
    Favorite Answer

    1a(its not the essential property of antigen anyway. the essential property of antigen is that, an antigen should evoke immune response. but there is no such option. our breakfast, lunch, dinner are also foreign bodies introduced in our body but those are not antibodies) 2d 3a 4d 5a 6b 7a 8d 9d 10e

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