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OCR GCE A LEVEL BIOLOGY B PAPER 2 QUESTION PAPER 2023 (H422/02: Scientific literacy in biology)
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OCR GCE A LEVEL BIOLOGY B PAPER 2 QUESTION PAPER 2023 (H422/02: Scientific literacy in biology). DOWNLOAD OFFICIAL AND VERIFIED OCR GCE A LEVEL BIOLOGY B PAPER...
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OCR GCE A LEVEL BIOLOGY B PAPER 2 QUESTION PAPER 2023 (H422/02: Scientific literacy in biology). DOWNLOAD OFFICIAL AND VERIFIED OCR GCE A LEVEL BIOLOGY B PAPER 2 QUESTION PAPER 2023 ON www.leakedexams.com.


1 This question is based on the Advance Notice Article ‘Development of therapeutic antibodies
for the treatment of disease’.
 (a) (i) State what is meant by the term antigen.
 ...........................................................................................................................................
 ...................................................................................................................................... [1]
 (ii) Scientists can combine antibody fragments using phage display to produce many
different antibodies, each specific to a different antigen.
 Using the abbreviations from Fig. 1 in the Advance Notice Article, explain how
combining antibody fragments allows scientists to produce many different antibodies,
each specific to a different antigen.
 ...........................................................................................................................................
 ...........................................................................................................................................
 ...........................................................................................................................................
 ...........................................................................................................................................
 ...................................................................................................................................... [2]
 (iii) The B cell receptor is an IgG molecule with the same structure as the human IgG
shown in Fig. 1 in the Advance Notice Article.
 Use an abbreviation from Fig. 1 to identify the part of the B cell receptor that will be
attached to the cell surface membrane of a B cell.
 ...................................................................................................................................... [1]


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Author OCR KING
Published 30 Jul 2024
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H422 H422/02 OCR GCE BIOLOGY B PAPER 2 QUESTION PAPER 2023 OCR A LEVEL BIOLOGY B PAPER 2 OCR BIOLOGY B PAPER 2 2023 BIOLOGY B PAPER 2 OCR OCR BIOLOGY B 2023 OCR A LEVEL BIOLOGY B PAPER 2 2023 A LEVEL BIOLOGY B 2023 OCR
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