Exam Connection

🎯 Exam Connection

Frequency: Penicillin appears in 4 out of 5 recent AQA sittings (VERY HIGH). It is the single most important case study for factor analysis questions in the 20th century. Almost every question about "what caused medical progress?" or "how important was war/individuals/government?" uses penicillin as a key example.

Paper 2, Section A — Thematic Study (Medicine Through Time c.1250–present). This is NOT Paper 1. Question types differ from the period study.

Typical questions you will face:

• "How useful is Source A for an enquiry into the development of penicillin?" (8 marks, AO4) — Evaluate NOP (Nature, Origin, Purpose) and deploy own knowledge to support or challenge. Key knowledge: Fleming's accidental discovery (1928), 12-year gap, Florey and Chain's mouse tests (1940, four treated mice survived, four untreated died), first human trial (Albert Alexander, 1941), US government investment (~$3 million), D-Day production (June 1944). Level 4 requires detailed NOP AND specific own knowledge.
• "Explain the significance of World War Two for the development of penicillin" (8 marks, AO1+AO2) — Short-term significance: WW2 created urgent military demand (soldiers dying from infected wounds), driving US government to invest ~$3 million in mass production; by D-Day 1944, enough penicillin for all Allied casualties. Long-term significance: established the model of government-funded pharmaceutical mass production; penicillin saved hundreds of millions of lives; proved that a broad-spectrum antibiotic was achievable. Show why WW2 mattered beyond the war itself — it converted a laboratory discovery into a globally available treatment.
• "How far was war the most important factor in medical progress in the 20th century?" (16 marks including SPaG) — Argue FOR: WW2 converted Fleming's 1928 discovery into mass production in 3 years; WW1 developed blood transfusions and plastic surgery. Argue AGAINST: peacetime factors were essential — germ theory (Pasteur 1861), Fleming's chance discovery was peacetime, DNA structure (Watson and Crick 1953), NHS (1948 political decision). Make a clear, supported judgement. SPaG marks: penicillin, antibiotic, fermentation, Florey, pharmaceutical.

For Level 3+ on significance questions: Show the chain of factors. "WW2 was crucial because it transformed a proven but small-scale treatment (Florey and Chain's 1941 human trial) into an industrial operation. The war created urgent military demand — soldiers were dying from infected wounds — giving the US government reason to invest ~$3 million in coordinating production by pharmaceutical companies such as Pfizer and Merck. By D-Day in June 1944, enough penicillin had been produced to treat all Allied casualties. Without the war, this industrial effort might have taken decades."

For Level 4 on the change-and-continuity essay: Show how all factors were interdependent. "Although chance (Fleming's accidental discovery) provided the starting point, it was insufficient on its own — the discovery sat unused for 12 years. Florey and Chain's individual determination converted it into a workable drug. War then provided the urgency that mobilised government funding and industrial technology at scale. This shows that none of the five factors — chance, individuals, war, government, technology — was sufficient alone."

📝 Worked Example: "Describe two features of the development of penicillin." (4 marks)

Feature 1: One feature was Fleming's accidental discovery in 1928. He noticed that a Penicillium mould had landed on a petri dish and was killing the surrounding bacteria. However, he could not purify it or produce it in sufficient quantities for medical use, so the discovery was not developed further at that time.

Feature 2: Another feature was Florey and Chain's mass production programme during World War Two. The Oxford team purified penicillin and proved it worked on humans, and by 1944 — with US government funding of around $3 million — enough had been produced to treat all Allied casualties at D-Day.

Remember: 2 features x 2 marks each. Identify the feature (1 mark) + give supporting detail (1 mark). Don't explain WHY — just describe WHAT.