Biology 9700 · AS & A Level · Antibodies and vaccination

Antibodies and vaccination — practice question

During immune responses, B-lymphocytes are switched on and develop into plasma cells. Fig. 2.1 shows a drawing of a plasma cell based on a transmission electron micrograph.
(a(i))[1]

State the name of the process taking place at T.

(a(ii))[4]

Complete Table 2.1 by giving the names and functions of the cell structures labelled P, Q, R and S in the plasma cell shown in Fig. 2.1.

(b)[3]

Outline the stages used to produce monoclonal antibodies by the hybridoma method.

(c)[4]

Antibodies taken from human blood donors can be given to treat people who may have been infected by a pathogen. This stops them from becoming ill with the disease. Explain why this treatment does not stop people becoming ill if they are infected again with the same pathogen.

Worked solution & mark scheme

This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: The process is exocytosis.

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