Consider the given two statements:
I: | The acquired immune response is called "adaptive". |
II: | In acquired immunity, pathogen-specific receptors are "acquired" during the lifetime of the organism. |
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct and II is incorrect.
4. Both I and II are incorrect.
In the given diagram, A and B respectively represent:
1. | The N and the C terminus of the polypeptide |
2. | The C and the N terminus of the polypeptide |
3. | The constant and variable regions of the antibody molecule |
4. | The variable and constant regions of the antibody molecule |
The principle of immunization or vaccination is based on which property of the immune system?
1. Specificity
2. Memory
3. Ability to recognize self from non-self
4. Cooperation between innate and adaptive immunity
A drug that would not be helpful in the treatment of allergies is:
1. | Antibiotics | 2. | Antihistaminics |
3. | Steroids | 4. | Adrenaline |
Small masses of lymphatic tissue found throughout the ileum region of the small intestine are called:
1. | Paneth cells | 2. | Meissener’s Plexus |
3. | Peyer’s patches | 4. | Entero-chromaffin cells |
What constitutes about 50% of the lymphoid tissue in the human body?
1. | Malt | 2. | Spleen |
3. | Lymph nodes | 4. | Liver |
I: | A is thymus and it is a secondary lymphoid organ. |
II: | B is MALT and is a primary lymphoid organ. |
1. | Only I | 2. | Only II |
3. | Both I and II | 4. | Neither I nor II |
I: | The primary lymphoid organs are where immature lymphocytes differentiate into antigen sensitive lymphocytes. |
II: | The thymus is quite small at the time of birth and keeps increasing in size with age. |
III: | Antigens trapped in the lymph nodes are responsible for the activation of lymphocytes present there and cause the immune response. |