5 questions · 2.1.5
Osmosis: from mass change to evidence
Five original application questions with data, explanatory responses and a saved self-check review list.
Start guided practice6 case studies · 30 original questions
Apply what you know
Use a context and its data to build an answer. Compare it with an explanatory response, then keep the questions that need another attempt.
Both courses can use these shared, original sets. The selected course determines topic references and official paper links.
5 questions · 2.1.4
Enzymes: rates, plateaus and conclusions
Five original application questions with data, explanatory responses and a saved self-check review list.
Start guided practice5 questions · 3.1.1, 3.1.2
Gas exchange and circulation: linking measurements
Five original application questions with data, explanatory responses and a saved self-check review list.
Start guided practice5 questions · 4.2.1, 6.3.1, 6.3.2
Ecological sampling: estimates and causation
Five original application questions with data, explanatory responses and a saved self-check review list.
Start guided practice5 questions · 6.1.2
Inheritance: expected counts and chi-squared
Five original application questions with data, explanatory responses and a saved self-check review list.
Start guided practice5 questions · 5.2.2
Respiration: apparatus, controls and interpretation
Five original application questions with data, explanatory responses and a saved self-check review list.
Start guided practiceUse evidence, then explain its meaning
Write your answer before opening the example. Tick only the self-check points you included. An incomplete self-check adds the question to your review list; it does not assign examination marks.
Drafts are saved in this browser and are never sent to analytics. Clear a set’s saved work on its practice page. For authentic exam marking, use an official paper and its mark scheme.
Official OCR A papers · Course topic map · Practical reasoning guides