This memory aid covers Memory Aids: Lock In the Key Facts within Penicillin for GCSE History. Revise Penicillin in Medicine Through Time for GCSE History with 8 exam-style questions and 4 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 11 of 14 in this topic. Use it for quick recall, then test yourself straight afterwards so the memory aid becomes usable in an answer.
Topic position
Section 11 of 14
Practice
8 questions
Recall
4 flashcards
🧠 Memory Aids: Lock In the Key Facts
The "CIWGT" framework — five factors for penicillin:
- C — Chance: Fleming's accidental mould observation (1928)
- I — Individuals: Florey and Chain purified and tested it (1939–41)
- W — War: WW2 created urgency and political will for mass production (1941–44)
- G — Government: US government invested ~$3 million, coordinated pharmaceutical companies
- T — Technology: Deep fermentation method enabled industrial-scale production
Key dates sequence — "28-40-41-44":
- 1928: Fleming discovers penicillin accidentally — mould on petri dish
- 1929: Fleming publishes findings — but cannot purify it
- 1940: Florey and Chain test on mice — four treated mice survive, four untreated die
- 1941: First human trial (Albert Alexander, police constable) — works but supply runs out
- 1941: Florey flies to USA — seeks industrial production help
- 1944 (D-Day): Enough penicillin produced for all Allied casualties
- 1945: Fleming, Florey, and Chain share Nobel Prize
Fleming vs Ehrlich — the contrast the examiner loves:
- Fleming: Accidental discovery (chance), 1928, left petri dish contaminated
- Ehrlich: Systematic search (individual determination), tested 606 compounds deliberately
- Both = "individuals" factor — but very different types of individual contribution
The "12-year gap" fact: Fleming discovered penicillin in 1928. Florey and Chain began serious development in 1939. That is 11 years of nothing happening. This gap proves that discovery alone is not enough — development requires separate people, resources, and motivation (in this case, war). Memorise: "1928 discovery, 1939 development, 1944 mass production."
Visual association: Picture four scenes in sequence: (1) Fleming looking surprised at a petri dish with mould (1928 — chance); (2) Florey and Chain in white coats with four living mice and four dead ones (1940 — individuals); (3) a WW2 soldier receiving a penicillin injection on a battlefield (1941–44 — war); (4) a Pfizer factory with giant fermentation tanks (1944 — government/technology). Each scene is a different factor, each one needed to get to the end result.