MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Cell Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which antibody is produced at high levels in response to parasitic functions? |
| A. | IgA |
| B. | IgE |
| C. | IgG |
| D. | IgD |
| Answer» C. IgG | |
| 2. |
Which is the first antibody secreted by B cells following stimulation by an antigen? |
| A. | IgG |
| B. | IgM |
| C. | IgE |
| D. | IgD |
| Answer» C. IgE | |
| 3. |
The heavy and light chains of the antibodies are linked to one another by ____________________ |
| A. | covalent bonds |
| B. | disulfide bonds |
| C. | ionic bonds |
| D. | hydrogen bonds |
| Answer» C. ionic bonds | |
| 4. |
Which of the following serves as antigen receptors? |
| A. | antibodies |
| B. | cytokines |
| C. | chemokines |
| D. | necrosis factors |
| Answer» B. cytokines | |
| 5. |
A harmless version of tetanus toxin is called _________________ |
| A. | clostridium |
| B. | plasmid |
| C. | toxoid |
| D. | thylakoid |
| Answer» D. thylakoid | |
| 6. |
Who discovered the vaccination against smallpox? |
| A. | Louis Pasteur |
| B. | Francis Crick |
| C. | Barbara McClintock |
| D. | Edward Jenner |
| Answer» E. | |
| 7. |
For the body to develop immunologic tolerance, production of ____________________ must be prevented. |
| A. | antibodies |
| B. | antigens |
| C. | autoantibodies |
| D. | lymphocytes |
| Answer» D. lymphocytes | |
| 8. |
In case of acquired immune system, a secondary immune response is generated by the ______________ |
| A. | memory B-cells |
| B. | germ cells |
| C. | lymphoid tissues |
| D. | antigens |
| Answer» B. germ cells | |
| 9. |
B-lymphocytes that do not differentiate into plasma cells are called _______________________ |
| A. | T-lymphocytes |
| B. | Helper T-cells |
| C. | Memory B cells |
| D. | Memory T-cells |
| Answer» D. Memory T-cells | |
| 10. |
Plasma cells possess extensive smooth endoplasmic reticulum. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Some of the activated B-cells lead to the formation of short-lived ______________________ |
| A. | plasma cells |
| B. | evanescent waves |
| C. | memory cells |
| D. | thymus cells |
| Answer» B. evanescent waves | |
| 12. |
Antigens that do not require the involvement of T-cells for the activation of B-cells are _____________________ |
| A. | thymus-dependent |
| B. | thymus-independent |
| C. | intracellular pathogens |
| D. | facultative anaerobes |
| Answer» C. intracellular pathogens | |
| 13. |
B-cells arise from ______________________ |
| A. | progenitor cells |
| B. | antigens |
| C. | antibodies |
| D. | natural killer cells |
| Answer» B. antigens | |
| 14. |
Who proposed the clonal selection theory? |
| A. | James Watson |
| B. | Niels Jerne |
| C. | Francis Crick |
| D. | Frank MacFarlane Burnet |
| Answer» E. | |
| 15. |
According to the “instructive model” the antigen instructs lymphocytes to produce antibodies. |
| A. | True |
| B. | False |
| Answer» B. False | |