OCR A Level Biology Communicable Diseases, Pathogens and Plant Defences Written Exam Questions – 15 Question Marked Quiz
15 real OCR exam questions on pathogens, how they spread, plant defences and the body's first line of defence, marked as you go with OCR mark schemes and examiners' tips.
OCR A Level Biology Communicable Diseases and Immunity Exam Questions – 28 Question Self-Marking Quiz
This free quiz has 28 multiple choice questions on communicable diseases and the immune system, all from OCR A Level Biology A past papers. It runs from types of pathogen through to B and T lymphocytes, and marks itself as you finish.