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7402 · AQA A Level

Biology 7402 Exam Tips

In AQA A Level Biology, knowing your theory is barely half the battle. Top scorers know that the real differentiator lies in the precise, non-negotiable phrasing of the mark schemes. Examiners are not looking for broad biological stories; they are matching your script to specific…

Source: AQA

Papers

3

Total marks

260

Time limit

6h

Grade scale

A*ABCDEU

Additional note

Calculator policy

A scientific or graphical calculator that meets JCQ regulations may be used (some GCSE Mathematics and Science papers are non-calculator). Graphical calculators must be set to exam mode; you must clear any stored programs, notes or data before the exam, and the calculator must not be able to retrieve stored text or formulae.

Assessment objectives

AO3 (Analysis and Evaluation). This means you must present a balanced argument—points *for* and points *against*. If you only list supportive evidence and omit the limitations (such as 'small sample size', 'only tested on mice', or 'no statistical test performed'), you cap your score. For 'Suggest' prompts, the examiner is testing your ability to apply known concepts to novel contexts. For example, if asked about the effect of a competitive inhibitor like MiTMAB on an enzyme, construct your answer step-by-step: describe how it binds to an allosteric site, changes the tertiary structure of the active site, prevents complementary substrate binding, and thus reduces enzyme-substrate complex formation.

3

Papers

6

Strategies

10

Mistakes

  • In AQA A Level Biology, knowing your theory is barely half the battle. Top scorers know that the real differentiator lies in the precise, non-negotiable phrasing of the mark schemes. Examiners are not looking for broad biological stories; they are matching your script to specific trigger words. For instance, in homeostasis questions regarding ultrafiltration or the proximal convoluted tubule, stating that cells have 'mitochondria and carrier proteins' will score zero. You must write many mitochondria and many carrier proteins to secure the mark. Similarly, when describing active transport or facilitated diffusion, never use the vague word 'it'—always explicitly name the protein, molecule, or ion in motion. Replace vague terms like 'speeds up the reaction' with A-level specific terminology, such as 'increases the rate of enzyme-substrate complex formation'.

Tips are paraphrased for study purposes from exam structure data and marking patterns. Always verify against your official syllabus and mark scheme.