AQA RP1 context
Enzymes: plan a pH comparison
Investigate how pH affects a supplied enzyme reaction, using the volume of product collected over 45 seconds.
AQA 3.1.4 · OCR A 2.1.4
Open workbenchA-level Biology · AQA and OCR A
Plan, calculate, evaluate
Connect a practical design to the evidence it can support. Compare matched and flawed examples, then explain what the results allow you to conclude.
Six workbenches with 18 design decisions, 12 calculations and six written evaluations. Each has saved work, stage review, optional plotted summaries and printable worksheets.
AQA RP3 context
Osmosis: compare tissue and solution
Investigate the effect of external sucrose concentration on the mass change of comparable plant-tissue pieces.
AQA 3.2.3, 3.1.7 · OCR A 2.1.5
Open workbench
AQA RP4 context
Membranes: evaluate a pigment-leakage comparison
Investigate how treatment temperature relates to pigment released from comparable coloured plant tissue over a fixed interval.
AQA 3.2.3 · OCR A 2.1.5
Open workbench
AQA RP8 context
Chloroplasts: separate light from another variable
Investigate light intensity and a redox-indicator absorbance change in a supplied chloroplast assay.
AQA 3.5.1 · OCR A 5.2.1
Open workbench
Respiration reasoning; AQA RP9 connection, not its identical protocol
Respiration: correct a displacement measurement
Investigate temperature and gas-displacement readings for comparable respiring material over five minutes.
AQA 3.5.2 · OCR A 5.2.2
Open workbench
AQA RP12 context
Field sampling: judge a habitat comparison
Investigate an association between soil moisture and the density of one plant species across habitat zones.
AQA 3.7.4, 3.4.7 · OCR A 6.3.1, 4.2.1
Open workbenchWhat the examples show
Changing the evidence setting selects an authored dataset. It can illustrate a confound, a biased sample or the difference between one reading and several. It does not predict the outcome of a real experiment.
These are practical reasoning activities, not laboratory protocols or practical-endorsement assessment. Use your course resources and teacher’s guidance for the complete required work.