CAIE A Level Biology 9700 · Immunity
A biotechnology company is developing a diagnostic test for amoebic dysentery, caused by the protozoan Entamoeba histolytica. The test uses monoclonal antibodies that bind specifically to a surface protein antigen on the amoeba. Explain how monoclonal antibodies are produced using the hybridoma method and how they are used in this diagnostic test to detect the presence of the pathogen.
5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.
Explain means: Give the reasons or the mechanism: why or how something happens. Link each point to the next with because, so or which means. A list of facts with no links usually loses the reasoning marks.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.