A-LevelBiologyImmunityFeb/Mar 2019Paper 1 Q401 Mark
The graph shows the changes that occur in the concentration of antibodies in the blood of a baby before birth and during the first few months after birth. [Figure shows a graph of antibody concentration vs time/months with curves for total antibodies, antibodies made by baby, and antibodies from mother] Which description about the changes in immunity during the first few months after birth is correct?
Aactive artificial immunity decreases, active natural immunity increases
Bactive natural immunity decreases, active artificial immunity increases
Cpassive artificial immunity decreases, active natural immunity increases
Dpassive natural immunity decreases, active natural immunity increases
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of immunity within the Biologysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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