Required practical 3 1 Explain what a Learning activities: Students could Production of a dilution week dilution series is Students conduct an experiment undertake the series of a solute to and produce one to identify the potential of investigations/ produce a calibration from stock plant tissue. This should include: questions from the curve with which to solutions. following ISAs: research into methods identify the water Apply knowledge to carrying out P14 potential of plant tissue. explain how the processing and presentation BIO3T Q09 water potential of a of data plant tissue can be HBI3T P10 evaluation and explanation experimentally findings HBI3T P12 determined. a past ISA paper (relevant to Represent raw and practical). processed data Specimen clearly using tables assessment material: Skills developed by learning and graphs. activities: Process data to AS Paper 1 (set 1) – calculate Q8 AT c use glassware to – percentage produce serial dilutions gain/loss. MS 0.1/0.2 use and convert – Apply knowledge to Past exam paper concentrations between explain trends in material: standard and ordinary form graphs in relation to MS 0.3 calculate BIOL1 Jan 2009 Q3 – – osmosis, water percentage change in mass BIOL1 Jan 2011 Q5 potential and mass – PS 1.1 design an – change. BIOL1 Jan 2010 Q5 experiment, based on – Explain the research, to test a hypothesis usefulness of PS 2.2/MS 3.1/MS 3.2/MS 1.3 calibration curves or plot the experimental data in – standards. an appropriate format (tables Evaluate the results and graphs) and conclusions.
Required practical 3 Production of a dilution series of a solute to produce a calibration curve with which to identify the water potential of plant tissue. 1 week Explain what a dilution series is and produce one from stock solutions. Apply knowledge to explain how the water potential of a plant tissue can be experimentally determined. Represent raw and processed data clearly using tables and graphs. Process data to calculate percentage gain/loss. Apply knowledge to explain trends in graphs in relation to osmosis, water potential and mass change. Explain the usefulness of calibration curves or standards. Evaluate the results and conclusions. Learning activities: Students conduct an experiment to identify the potential of plant tissue. This should include: research into methods carrying out processing and presentation of data evaluation and explanation findings a past ISA paper (relevant to practical). Skills developed by learning activities: AT c – use glassware to produce serial dilutions MS 0.1/0.2 – use and convert concentrations between standard and ordinary form MS 0.3 – calculate percentage change in mass PS 1.1 – design an experiment, based on research, to test a hypothesis PS 2.2/MS 3.1/MS 3.2/MS 1.3 – plot the experimental data in an appropriate format (tables and graphs) Students could undertake the investigations/ questions from the following ISAs: P14 BIO3T Q09 HBI3T P10 HBI3T P12 Specimen assessment material: AS Paper 1 (set 1) – Q8 Past exam paper material: BIOL1 Jan 2009 – Q3 BIOL1 Jan 2011 – Q5 BIOL1 Jan 2010 – Q5
AQA-7401-SOW.DOCX