Exam Connection

🎯 Exam Connection

Frequency: Magic bullets appear in 3 out of 5 recent AQA sittings (HIGH). They are most commonly examined as part of factor analysis questions about what caused medical progress in the 20th century, or as a describe-two on Ehrlich's work. The chain from germ theory to magic bullets to penicillin is a favourite AQA narrative.

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 new treatments in the early 20th century?" (8 marks, AO4) — Evaluate NOP (Nature, Origin, Purpose) and deploy own knowledge to support or challenge. Key knowledge: Salvarsan/Compound 606 (1909, Ehrlich, syphilis), Prontosil/sulphonamides (1932, Domagk, streptococcal infections), the chain from germ theory to magic bullets. Level 4 requires detailed NOP AND specific own knowledge.
• "Explain the significance of Paul Ehrlich's discovery of Salvarsan (1909) for the development of medicine" (8 marks, AO1+AO2) — Short-term significance: first synthetic drug to target a specific bacterium (syphilis); proved the magic bullet concept worked in practice. Long-term significance: established the systematic pharmaceutical research method; inspired sulphonamides (1932) and penicillin development; showed that germ theory could be applied to create chemical cures, not just prevent or manage disease. Show why Salvarsan was a turning point in the chain from germ theory to modern medicine.
• "How far was individual genius the main reason for medical progress in the period c.1861–1945?" (16 marks including SPaG) — Argue FOR individuals: Ehrlich (606 tests, systematic method), Domagk (personal motivation, Prontosil), Fleming (chance observation). Argue AGAINST: germ theory (Pasteur/Koch) provided the essential framework; industrial investment (Hoechst AG, Bayer) provided funding; WW2 created urgency for penicillin production. Make a clear, supported judgement. SPaG marks: Salvarsan, sulphonamide, Ehrlich, systematic, pharmaceutical.

For Level 3+ on significance questions: Show the chain of causation. "Ehrlich's discovery of Salvarsan in 1909 was an important turning point because it proved for the first time that a synthetic chemical could target and kill a specific bacterium inside the human body without killing the patient. This built directly on Koch's proof that specific bacteria cause specific diseases. The success of Salvarsan inspired further chemical research, leading directly to Domagk's sulphonamides (1932) and the mass production of penicillin during WW2."

For Level 4 on the change-and-continuity essay: Show the interconnection of factors. "Although Ehrlich's individual determination — testing 606 compounds — was essential, his work was impossible without the theoretical framework provided by germ theory and the financial support of Hoechst AG. This shows that individual genius, scientific theory, and industrial investment were interdependent: neither alone was sufficient. The same pattern repeats with penicillin: Fleming's chance observation needed Florey and Chain's systematic development and US government funding."