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Home⇒ Medical Science⇒ Biochemistry⇒ Antigen
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q1 ⇒ A pathogen can be a (n) All of these [other wrong options] [Discuss in forum] agent that causes a disease virus bacteria |
Q2 ⇒ During the lag period between antigen contact and detection of adaptive immunity, innate immune effectors are eliminating antigen [other wrong options] [Discuss in forum] antigen is hidden from the immune system in macrophages innate immunity blocks the activation of adaptive immune effector cells new B and T cells with the appropriate antigen specificity must be produced in the bone marrow |
Q3 ⇒ A molecule that can be covalently linked to a non-immunogenic antigen to make it an immunogen is called a (n) carrier [other wrong options] [Discuss in forum] adjuvant hapten mitogen |
Q4 ⇒ 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 both an antigen and a hapten [other wrong options] [Discuss in forum] an antigen a hapten an immunogen |
Q5 ⇒ Lymphocytes are activated by antigen in the lymph nodes [other wrong options] [Discuss in forum] blood stream bone marrow liver |
Q6 ⇒ For specific antigen recognition by T cells, denaturation of antigen does not reduce epitope recognition [other wrong options] [Discuss in forum] antigen is bound by a T cell membrane antibody MHC molecules are not required antigen exposure during T cell maturation is required |
Q7 ⇒ A virus vaccine that can activate cytotoxic T cells must contain live virus [other wrong options] [Discuss in forum] a high dose of virus particles an adjuvant to stimulate T cell division virus peptides |
Q8 ⇒ Very low doses of antigen may induce low zone tolerance [other wrong options] [Discuss in forum] hypersensitivity immunological ignorance low zone immunity |
Q9 ⇒ CD antigens function as receptors for cytokine and CAMs [other wrong options] [Discuss in forum] allow leukocytes to recognize antigen are each expressed on only one cell type are expressed on immune cells to mark them for separation |
Q10 ⇒ Which of the following is incorrect with regard to antigen epitopes? B cells bind only processed antigen epitopes [other wrong options] [Discuss in forum] An epitope may be shared by two different antigens A protein molecule usually contains multiple epitopes Epitopes may be linear or assembled |
Q11 ⇒ Antigen, when injected in the body activates its specific lymphocytes in the draining lymph nodes [other wrong options] [Discuss in forum] blood circulation MALT (mucosa associated spleen lymphoid tissue |
Q12 ⇒ The ability of an antigen to induce an immune response does not depend on the antigen's ability to enter the thyroid [other wrong options] [Discuss in forum] degree of aggregation dose size |