A-LevelBiologyImmunityFeb/Mar 2018Paper 1 Q401 Mark
A vaccine is used to create artificial active immunity. After being given a vaccine, it will take a period of time before a person develops long-term immunity against the disease. Which statement about this period of time explains this delay?
ANo memory cells have been produced from B-lymphocytes.
BNo plasma cells have been produced from B-lymphocytes.
CThe primary immune response has not produced enough antibodies.
DThe secondary immune response has not produced enough antibodies.
✓ Correct Answer
The correct answer is A. 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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