‹ GCSE Combined and Separate Science
Infection and response
Pathogens and how they spread, the body's defences and the immune system, vaccines, antibiotics and resistance, drug trials, and (Biology only) monoclonal antibodies and plant disease.
Start: Pathogens and how they spread About 20 min, free
Lessons
Practise and test
By the end you can
Name the pathogen behind each disease you need, say how it spreads and how to control it Explain how barriers and white blood cells defend the body, and read an antibody graph Explain how vaccines and herd immunity protect people, and how antibiotic resistance develops Calculate percentages and percentage reductions from vaccination and drug-trial data, and evaluate a trial's design Describe how monoclonal antibodies are made and used (Biology only, Higher) Identify plant diseases and deficiencies and describe plant defences (Biology only) Give the pathogen, signs, spread and control of the Edexcel diseases, explain how HIV raises the risk of tuberculosis, and describe the lytic and lysogenic pathways (Edexcel, Biology only) Revision notes
Specifications AQA 8461 (Biology) 4.3AQA 8464 (Combined Trilogy) 4.3Pearson Edexcel 1BI0 and 1SC0 Topic 5OCR Gateway J247 and J250 B5
Next unit: Bioenergetics: photosynthesis and respiration Previous unit: Organisation: tissues, organs, digestion and circulation
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