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?

Q: What topic does this question test?

This question tests Immunity in A-Level Biology (syllabus code 9700). It is worth 1 mark.

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: No memory cells have been produced from B-lymphocytes.

📋 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...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

🔒

Unlock the Examiner's Analysis

Join thousands of Cambridge students already using Oracle Prep

About This A-Level Biology Question

Topic

This multiple-choice question tests Immunity in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Biology Feb/Mar 2018 examination, Paper 1 Variant 2.

Practice on Oracle Prep

Oracle Prep provides AI-powered practice for all Cambridge O-Level and A-Level subjects. Our platform includes topic predictions with 87.7% accuracy, AI essay grading, and a comprehensive question bank spanning 25 years of past papers across 29 subjects.