MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The immune response to a booster vaccine is called a() |
| A. | cellular response |
| B. | innate response |
| C. | primary response |
| D. | secondary response |
| Answer» E. | |
| 2. |
What are the solutions prepared from weakened or dead microorganisms, viruses, or toxins that provide some immunity from diseases? |
| A. | Vaccines |
| B. | Histamines |
| C. | Drugs |
| D. | Antibiotics |
| Answer» B. Histamines | |
| 3. |
During exposure to a foreign invader, there are more __________ present in the vertebrate body than before exposure |
| A. | antibodies |
| B. | lymphocytes |
| C. | macrophages and antigens |
| D. | all of these |
| Answer» E. | |
| 4. |
To elicit the best antibodies to mouse MHC I, it should be injected into a |
| A. | goat |
| B. | mouse of the same genetic background (strain) |
| C. | mouse of a different strain |
| D. | rat |
| Answer» B. mouse of the same genetic background (strain) | |
| 5. |
To detect a humoral immune response to influenza virus, it is possible to measure |
| A. | cytotoxicity of virus-infected cells in tissue culture |
| B. | dividing T cells in the draining lymph nodes |
| C. | plasma cytokine levels |
| D. | serum antibody titer |
| Answer» E. | |
| 6. |
Polysaccharides on the surface of infecting microorganisms can also activate complement directly in the absence of |
| A. | antibody via the alternative pathway |
| B. | antigen via the alternative pathway |
| C. | antibody via metabolic pathway |
| D. | none of the above |
| Answer» B. antigen via the alternative pathway | |
| 7. |
Immunological memory is due to |
| A. | short lived macrophage that can recognize specific pathogens |
| B. | long lived B cells that secrete a specific antibody |
| C. | long lived B cells that secrete a specific antigen |
| D. | short lived helper T cells that signal macrophage to divide |
| Answer» C. long lived B cells that secrete a specific antigen | |
| 8. |
Which of the following immune cells would have an especially low count in a patient with advanced AIDS? |
| A. | Killer T lymphocytes |
| B. | Helper T lymphocyte |
| C. | B lymphocytes |
| D. | None of these |
| Answer» C. B lymphocytes | |
| 9. |
Plasma cells produce thousands of __________ that are released into the bloodstream |
| A. | antigens |
| B. | antibodies |
| C. | helper T cells |
| D. | virus fragments |
| Answer» C. helper T cells | |
| 10. |
If a person is vaccinated against a disease sometime in the past, which of the following is currently in your body? |
| A. | The disease organism itself and antigens for the disease organism |
| B. | A very high level of antibodies against the disease antigens |
| C. | Memory B lymphocytes for the antigen of this disease organism |
| D. | All of the above |
| Answer» E. | |
| 11. |
What is the result of an abnormal response of the immune system to part of a person's own body? |
| A. | Passive immunity |
| B. | Cancer |
| C. | An allergic response |
| D. | An autoimmune disease |
| Answer» E. | |
| 12. |
What is a protein produced by host cells infected by viruses? |
| A. | Interferon |
| B. | Histamine |
| C. | Antiserum |
| D. | Vaccine |
| Answer» B. Histamine | |
| 13. |
Which of the following is in the lymph nodes of a person battling a cold virus? |
| A. | Huge numbers of white blood cells |
| B. | Trapped viruses that have been roaming the body |
| C. | Lymph ducts that enter and exit the nodes and Lymph fluid |
| D. | All of the above |
| Answer» E. | |
| 14. |
Antibodies bound to an invading microorganism activate the complement system via |
| A. | classical pathway |
| B. | metabolic pathway |
| C. | Embden Meyerhof pathway |
| D. | Entner-Doudoroff pathway |
| Answer» B. metabolic pathway | |
| 15. |
In cellular immunity, T lymphocytes are responsible for the recognition and killing of foreign invaders. The cells are |
| A. | cytotoxic T lymphocytes (CTL) |
| B. | killer T cells |
| C. | both (a) and (b) |
| D. | none of the above |
| Answer» D. none of the above | |
| 16. |
Immunogenicity |
| A. | depends on the ability of the native antigen to be presented by MHC |
| B. | is usually a property of self antigens such as eye tissue |
| C. | is not a property of antibodies |
| D. | is not a property of haptens |
| Answer» E. | |
| 17. |
The immune response to a booster vaccine is called a(n) |
| A. | cellular response |
| B. | innate response |
| C. | primary response |
| D. | secondary response |
| Answer» E. | |