Class 12 Biology Exam Prep
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Class 12 Biology Exam Prep
Sample questions with model answers
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Name the two types of specialised cells which carry out the primary and secondary immune response.
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B cells and T cells are responsible for primary and secondary immune responses.
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Why is the antibody-mediated immunity also called as humoral immune response?
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It involves antibodies present in body fluids (humors) that target pathogens.
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The organ transplants are often rejected if not taken from suitable compatible persons. (i) Mention the characteristic of our immune system that is responsible for the graft rejection. (ii) Name the type of immune response and the cell involved in it.
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The immune system's ability to recognize self from non-self; cell-mediated immune response involving T cells.
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How is active immunity different from passive immunity?
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Active immunity is long-lasting and developed by exposure; passive immunity is temporary and involves direct antibody transfer.
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