AO3 interpret evidence to – make judgements and conclusions from Biuret test. Extension: 0.2 Explain the principle Learning activities: Past exam paper weeks of chromatography. questions: teacher explanation of Chromatography is Identify acids in chromatography and Rf HBIO1 Jan 2009 – only specification a mixture. values content and is covered Interpret Rich question: students conduct in Required practical 7. It chromatograms. Explain the basis by chromatography on a mixture could be introduced here which chromatography of acids or on leaf as an extension activity. is able to separate pigments different amino acids. calculation of Rf values and comparison against published Separate biological values. compounds using thin layer/paper chromatography. Skills developed by learning activities: AT g use chromatography – with known standard solutions, to separate a mixture of amino acids and identify their components MS 2.3/MS 2.4 calculation – of Rf values and comparison against published data
AO3 – interpret evidence to make judgements and conclusions from Biuret test. Extension: Chromatography is only specification content and is covered in Required practical 7. It could be introduced here as an extension activity. Separate biological compounds using thin layer/paper chromatography. 0.2 weeks Explain the principle of chromatography. Identify acids in a mixture. Interpret chromatograms. Learning activities: teacher explanation of chromatography and Rf values students conduct chromatography on a mixture of acids or on leaf pigments calculation of Rf values and comparison against published values. Skills developed by learning activities: AT g – use chromatography with known standard solutions, to separate a mixture of amino acids and identify their components MS 2.3/MS 2.4 – calculation of Rf values and comparison against published data Past exam paper questions: HBIO1 – Jan 2009 Rich question: Explain the basis by which chromatography is able to separate different amino acids.
AQA-7401-SOW.DOCX