11. Immunity
A section of Biology, 9700
Listing 10 of 303 questions
A student used a diagram to show four types of cells involved in the primary immune response. unknown antigen enters the body cell type 4 recognise the foreign antigen, move towards it and surrounds it cell type 1 release chemicals that stimulate phagocytes to engulf antigens cell type 3 produce the antibodies required to bind to the antigen cell type 2 destroy cells infected with viruses which would be released into the body Which row is correct?
9700_s22_qp_12
MCQ
2022
Paper 1, Variant 2
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Cells of the immune system respond to the presence of non-self antigens. Outline the features of non-self antigens. Four different types of cells of the immune system are shown in Table 3.1. Complete Table 3.1: • use a tick (✓) if the description applies to the named cell of the immune system • use a cross (✗) if the description does not apply. Table 3.1 description of cell cell of the immune system B-lymphocyte plasma cell T-helper cell T-killer cell able to go through a number of cell cycles (clonal expansion) main role is to secrete cytokine during an immune response present during a primary immune response to a virus The cell cycle can be divided into different parts. Complete sentences A, B and C to provide more information about the mitotic cell cycle. A The part of the cell cycle that occurs immediately after mitosis is B The part of the cell cycle in which the S phase occurs is C The main event that occurs during the S phase is
9700_s23_qp_22
THEORY
2023
Paper 2, Variant 2
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Questions Discovered
303