Unit 7 Biology Prescribed Practicals B1-B6
Leaf starch, food energy, enzyme temperature, quadrat sampling, osmosis and plant water uptake or loss.
How to study for CCEA GCSE Double Award Science
Build each scientific explanation from a model or relationship, show quantitative working, and connect every practical claim to controlled evidence and evaluation.
Core concepts
Concept 1
The six Biology practicals connect biological processes to controlled measurements, observations and field or laboratory sampling.
Exam cue: Identify the scientific model, relationship or practical evidence required by the command word.
Concept 2
Living material introduces variation, so sufficient repeats, consistent preparation and suitable controls are essential.
Exam cue: For the named practical, state biological purpose, variables, safe method, measurement, expected pattern and limitation.
Concept 3
Biology Booklet A uses one current pre-release task based on but not identical to the prescribed set.
Exam cue: Use the current CCEA specification formatting and entered tier to decide whether Higher-only detail applies.
Risk pitfalls and guardrails
Memorising one classroom recipe without adapting it to the current CCEA apparatus, data or task wording.
Guardrail: Do not import another board or science route, omit units from a calculation, or make a scientific claim beyond the stated evidence.
Giving a remembered fact without connecting it to the stated data, observation or scenario.
Guardrail: Do not import another board or science route, omit units from a calculation, or make a scientific claim beyond the stated evidence.
Importing content or paper structure from a separate-science or non-CCEA specification.
Guardrail: Do not import another board or science route, omit units from a calculation, or make a scientific claim beyond the stated evidence.
Memory anchors
B1 Leaf starch
Investigate the need for light and chlorophyll in photosynthesis.
B2 Food energy
Estimate energy released when food samples burn.
B3 Enzyme temperature
Investigate how temperature affects enzyme action.
B4 Quadrat sampling
Estimate abundance of organisms in a habitat.
B5 Osmosis
Measure plant tissue or model-cell change during osmosis.
B6 Plant water
Use potometer or washing-line methods to study water uptake or loss.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
Why is a plant destarched before investigating whether light is needed for photosynthesis?
In the leaf-starch practical, why is a leaf heated in ethanol after boiling in water?
Answer all questions to submit.
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Move forward only after this module is stable.
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