MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A pathogen can be a () |
| A. | agent that causes a disease |
| B. | virus |
| C. | bacteria |
| D. | All of these |
| Answer» E. | |
| 2. |
A molecule that can be covalently linked to a non-immunogenic antigen to make it an immunogen is called a () |
| A. | adjuvant |
| B. | carrier |
| C. | hapten |
| D. | mitogen |
| Answer» C. hapten | |
| 3. |
For specific antigen recognition by T cells, |
| A. | antigen is bound by a T cell membrane antibody |
| B. | denaturation of antigen does not reduce epitope recognition |
| C. | MHC molecules are not required |
| D. | antigen exposure during T cell maturation is required |
| Answer» C. MHC molecules are not required | |
| 4. |
Antigen, when injected in the body activates its specific lymphocytes in the |
| A. | blood circulation |
| B. | draining lymph nodes |
| C. | MALT (mucosa associated |
| D. | spleen lymphoid tissue |
| Answer» C. MALT (mucosa associated | |
| 5. |
The ability of an antigen to induce an immune response does not depend on the antigen's |
| A. | ability to enter the thyroid |
| B. | degree of aggregation |
| C. | dose |
| D. | size |
| Answer» B. degree of aggregation | |
| 6. |
The antibiotic penicillin is a small molecule that does not induce antibody formation. However, penicillin binds to serum proteins and forms a complex that in some people induces antibody formation resulting in an allergic reaction. Penicillin is therefore |
| A. | an antigen |
| B. | a hapten |
| C. | an immunogen |
| D. | both an antigen and a hapten |
| Answer» E. | |
| 7. |
During the lag period between antigen contact and detection of adaptive immunity, |
| A. | antigen is hidden from the immune system in macrophages |
| B. | innate immune effectors are eliminating antigen |
| C. | innate immunity blocks the activation of adaptive immune effector cells |
| D. | new B and T cells with the appropriate antigen specificity must be produced in the bone marrow |
| Answer» C. innate immunity blocks the activation of adaptive immune effector cells | |
| 8. |
CD antigens |
| A. | allow leukocytes to recognize antigen |
| B. | are each expressed on only one cell type |
| C. | are expressed on immune cells to mark them for separation |
| D. | function as receptors for cytokine and CAMs |
| Answer» E. | |
| 9. |
A virus vaccine that can activate cytotoxic T cells must contain |
| A. | a high dose of virus particles |
| B. | an adjuvant to stimulate T cell division |
| C. | live virus |
| D. | virus peptides |
| Answer» D. virus peptides | |
| 10. |
Which of the following is incorrect with regard to antigen epitopes? |
| A. | An epitope may be shared by two different antigens |
| B. | A protein molecule usually contains multiple epitopes |
| C. | B cells bind only processed antigen epitopes |
| D. | Epitopes may be linear or assembled |
| Answer» D. Epitopes may be linear or assembled | |
| 11. |
Very low doses of antigen may induce |
| A. | hypersensitivity |
| B. | immunological ignorance |
| C. | low zone tolerance |
| D. | low zone immunity |
| Answer» D. low zone immunity | |
| 12. |
A pathogen can be a (n) |
| A. | agent that causes a disease |
| B. | virus |
| C. | bacteria |
| D. | All of these |
| Answer» E. | |
| 13. |
A molecule that can be covalently linked to a non-immunogenic antigen to make it an immunogen is called a (n) |
| A. | adjuvant |
| B. | carrier |
| C. | hapten |
| D. | mitogen |
| Answer» C. hapten | |
| 14. |
Lymphocytes are activated by antigen in the |
| A. | blood stream |
| B. | bone marrow |
| C. | liver |
| D. | lymph nodes |
| Answer» E. | |