際際滷

際際滷Share a Scribd company logo

3 b paper breakdown

Download as DOCX, PDF
L
Laura Stopforth

This document analyzes past exam papers for A Level Biology from 2009 to 2013. It summarizes the types of questions and practical investigations covered in each paper. The questions generally involve analyzing data from practical experiments, suggesting improvements to methods, identifying variables, plotting graphs, and drawing conclusions. The practical investigations covered include topics like the effect of temperature on membranes, enzyme reactions, plant mineral deficiencies, fiber strength, vitamin C content, caffeine effects, plant tissue culture, and observing mitosis under a microscope.

1 of 5
Download to read offline
SAIntS (Malawi) Biology Department April 2014 EDEXCEL A Level Biology Past Paper Analysis Paper 3B A level Biology Past Paper Analysis - 3B May 2009 Jan 2010 May 2010 Jan 2011 May 2011 Qu. 1 Investigating Temperature effect on beetroot (Plasma Membrane) Bacteria resistance to antibiotics. Enzymes efficiency of washing powders Mineral deficiency investigation Tensile strength of plant fibres 1a CV and IV, How DV (degrees of redness) can be measured. Suggest 2 improvements CV and suitable values Plot graph; Calculate dry mass IV & DV. How CV can be controlled. Describe how to prepare an agar plate and how to find size of the clear zone Risk assessment. Describe & suggest effects of deficiency. State 2 CV and how they can be controlled. 1b Calculate mean and plot graph. Plot graph. Calculate mean and plot graph CV, IV, state 2 CV and how they can be controlled. Plot graph Use graph to explain pattern of result. Comment on the relationship between garlic and effects. Describe & explain graph shape; comment on reliability; Suggest conclusions Describe how to find the dry mass. Describe effects from graph. 1c - Calculate mean & compare results - - State similarities / differences; data reliability; use data to suggest which fibre is most suitable. 1d - Discuss validity - -
SAIntS (Malawi) Biology Department April 2014 EDEXCEL A Level Biology Past Paper Analysis Paper 3B May 2009 Jan 2010 May 2010 Jan 2011 May 2011 Qu. 2 (Extract) Gene Testing (Tay- Sachs disease) William Withering Branston zoological park CO2 Acidification of Oceans Madagascan periwinkle and childhood leukaemia 2a State ways to reduce disease & discuss ethical implications Draw a flow chart; Economic implications; ID difference / similarities between modern and WW drug trials. Suggest a suitable title and how to investigate the validity of the info sources. Where to insert a table / why Where to insert 2 graphs / why; to what extent do graphs support a statement. Explain why childhood leukaemia is considered to be a problem. 2b Draw genetic diagram & explain where to put in extract. Draw a graph. Write an account on 2 diagrams & where to insert them in the extract. Consider further questions / where to look for answers. Cholesterol vs CVD use 3 charts to evaluate benefits / risks of statins (SPG mark) Consider further questions and where to look for answers. Suggest source of info about statins that may be unreliable / biased Draw suitable chart data; would majority of people agree with opinions expressed in article. Social / economic implications and where to insert in extract. Suggest a suitable title & explain where to put in extract. 2c - - Suggest how bibliography should be changed. Calculate mean; describe a suitable graph & trends shown. Suggest risks and cautions with data. Ethical, social, economic or environmental issues 2d / e - - Ethical, social, economic or environmental issues - How data supports a statement; describe graph. Improving a reference.
SAIntS (Malawi) Biology Department April 2014 EDEXCEL A Level Biology Past Paper Analysis Paper 3B Jan 2012 May 2012 Jan 2013 May 2013 Qu. 1 Vitamin C and DCPIP Daphnia & lactic acid Stem Cells Mitosis 1a Two CVs; Describe 1 more and how it could be controlled. Reasons for choosing daphnia, ethical implications. CV why keep temperature constant. Describe 1 more and how it could be controlled. Name 1 DV and IV; Describe 1 CV and howit couldbe controlled. ID zone where mitosis is taking place in a root tip 1b Calculate mean & plot graph. Describe effects of temperature on vitamin C content; comment on reliability of data. Calculate mean & plot graph. Describe & explain trends. Plot graph & describe effects of glucose concn on mean dry mass of callus; comment on data reliability. Describe effects of glucose concn on mean % of explants forming a callus; suggest optimum glucose concn ID cells undergoing mitosis and ID anaphase; with reasons 1c Compare data with that in the study & comment on validity. Suggest further info needed for valid comparisons. Comment on significance of data from a second graph. - Name a suitable stain; calculate mitotic index 1d - - - Mitotic Index (MI) - Draw graph; use graph to find where no mitosis; relationship b/n MI & distance from root tip; why not confident of difference b/n mean MIs
SAIntS (Malawi) Biology Department April 2014 EDEXCEL A Level Biology Past Paper Analysis Paper 3B Jan 2012 May 2012 Jan 2013 May 2013 Qu. 2 (Extract) Stem cells Pain and acupuncture Farming with GM crops Making Blood 2a Visit report problems ID in extract. Visit report problems ID in extract. Show advantages & disadvantages. Suggest where to place a visual & calculate mean. Sketch graph. Complete table on benefits / drawbacks of HBOCs (Haemoglobin-based Oxygen Carriers); Suggest 2 further features of HBOCs & RBCs 2b Flow diagram on a project and where to include. How to make a visual presentation of the data. Explain 2 environmental issues. Draw a sketch graph of the table (O2 conc. in plasma vs Perflubron at differing PP of O2; Suggest where graph should go n the article. 2c Advantages and disadvantages of ex situ conservation. Rewrite Bibliography & improve it. Find a bibliography reference in the extract. Rewrite a reference. ID in article an economic issue; suggest additional info to include 2d Usefulness of source evidence and how to present data in a suitable visual format. Comment on datas validity - Writing references (choose one form list provided); choose another references and list missing info. 2e Ethical, social, economic or environmental issues; how stem cell therapy may affect costs. Suggest 2 ways to improve the study. - 2f Bibliographies Economic implications of the study - 2g - Review evidence of acupuncture as painrelief /iscussalternatives. -
SAIntS (Malawi) Biology Department April 2014 EDEXCEL A Level Biology Past Paper Analysis Paper 3B When? AS Core Practicals May 2009 The effect of temperature on membranes. Jan 2010 The antimicrobial properties of plants. May 2010 Enzyme concentration and rate of reaction. Jan 2011 Investigating plant mineral deficiencies. May 2011 The strength of plant fibres. Jan 2012 The vitamin C content of fruit juice. May 2012 The effect of caffeine on heart rate (Daphnia) Jan 2013 Totipotency and plant tissue culture May 2013 Observing mitosis

More Related Content

3 b paper breakdown

  • 1. SAIntS (Malawi) Biology Department April 2014 EDEXCEL A Level Biology Past Paper Analysis Paper 3B A level Biology Past Paper Analysis - 3B May 2009 Jan 2010 May 2010 Jan 2011 May 2011 Qu. 1 Investigating Temperature effect on beetroot (Plasma Membrane) Bacteria resistance to antibiotics. Enzymes efficiency of washing powders Mineral deficiency investigation Tensile strength of plant fibres 1a CV and IV, How DV (degrees of redness) can be measured. Suggest 2 improvements CV and suitable values Plot graph; Calculate dry mass IV & DV. How CV can be controlled. Describe how to prepare an agar plate and how to find size of the clear zone Risk assessment. Describe & suggest effects of deficiency. State 2 CV and how they can be controlled. 1b Calculate mean and plot graph. Plot graph. Calculate mean and plot graph CV, IV, state 2 CV and how they can be controlled. Plot graph Use graph to explain pattern of result. Comment on the relationship between garlic and effects. Describe & explain graph shape; comment on reliability; Suggest conclusions Describe how to find the dry mass. Describe effects from graph. 1c - Calculate mean & compare results - - State similarities / differences; data reliability; use data to suggest which fibre is most suitable. 1d - Discuss validity - -
  • 2. SAIntS (Malawi) Biology Department April 2014 EDEXCEL A Level Biology Past Paper Analysis Paper 3B May 2009 Jan 2010 May 2010 Jan 2011 May 2011 Qu. 2 (Extract) Gene Testing (Tay- Sachs disease) William Withering Branston zoological park CO2 Acidification of Oceans Madagascan periwinkle and childhood leukaemia 2a State ways to reduce disease & discuss ethical implications Draw a flow chart; Economic implications; ID difference / similarities between modern and WW drug trials. Suggest a suitable title and how to investigate the validity of the info sources. Where to insert a table / why Where to insert 2 graphs / why; to what extent do graphs support a statement. Explain why childhood leukaemia is considered to be a problem. 2b Draw genetic diagram & explain where to put in extract. Draw a graph. Write an account on 2 diagrams & where to insert them in the extract. Consider further questions / where to look for answers. Cholesterol vs CVD use 3 charts to evaluate benefits / risks of statins (SPG mark) Consider further questions and where to look for answers. Suggest source of info about statins that may be unreliable / biased Draw suitable chart data; would majority of people agree with opinions expressed in article. Social / economic implications and where to insert in extract. Suggest a suitable title & explain where to put in extract. 2c - - Suggest how bibliography should be changed. Calculate mean; describe a suitable graph & trends shown. Suggest risks and cautions with data. Ethical, social, economic or environmental issues 2d / e - - Ethical, social, economic or environmental issues - How data supports a statement; describe graph. Improving a reference.
  • 3. SAIntS (Malawi) Biology Department April 2014 EDEXCEL A Level Biology Past Paper Analysis Paper 3B Jan 2012 May 2012 Jan 2013 May 2013 Qu. 1 Vitamin C and DCPIP Daphnia & lactic acid Stem Cells Mitosis 1a Two CVs; Describe 1 more and how it could be controlled. Reasons for choosing daphnia, ethical implications. CV why keep temperature constant. Describe 1 more and how it could be controlled. Name 1 DV and IV; Describe 1 CV and howit couldbe controlled. ID zone where mitosis is taking place in a root tip 1b Calculate mean & plot graph. Describe effects of temperature on vitamin C content; comment on reliability of data. Calculate mean & plot graph. Describe & explain trends. Plot graph & describe effects of glucose concn on mean dry mass of callus; comment on data reliability. Describe effects of glucose concn on mean % of explants forming a callus; suggest optimum glucose concn ID cells undergoing mitosis and ID anaphase; with reasons 1c Compare data with that in the study & comment on validity. Suggest further info needed for valid comparisons. Comment on significance of data from a second graph. - Name a suitable stain; calculate mitotic index 1d - - - Mitotic Index (MI) - Draw graph; use graph to find where no mitosis; relationship b/n MI & distance from root tip; why not confident of difference b/n mean MIs
  • 4. SAIntS (Malawi) Biology Department April 2014 EDEXCEL A Level Biology Past Paper Analysis Paper 3B Jan 2012 May 2012 Jan 2013 May 2013 Qu. 2 (Extract) Stem cells Pain and acupuncture Farming with GM crops Making Blood 2a Visit report problems ID in extract. Visit report problems ID in extract. Show advantages & disadvantages. Suggest where to place a visual & calculate mean. Sketch graph. Complete table on benefits / drawbacks of HBOCs (Haemoglobin-based Oxygen Carriers); Suggest 2 further features of HBOCs & RBCs 2b Flow diagram on a project and where to include. How to make a visual presentation of the data. Explain 2 environmental issues. Draw a sketch graph of the table (O2 conc. in plasma vs Perflubron at differing PP of O2; Suggest where graph should go n the article. 2c Advantages and disadvantages of ex situ conservation. Rewrite Bibliography & improve it. Find a bibliography reference in the extract. Rewrite a reference. ID in article an economic issue; suggest additional info to include 2d Usefulness of source evidence and how to present data in a suitable visual format. Comment on datas validity - Writing references (choose one form list provided); choose another references and list missing info. 2e Ethical, social, economic or environmental issues; how stem cell therapy may affect costs. Suggest 2 ways to improve the study. - 2f Bibliographies Economic implications of the study - 2g - Review evidence of acupuncture as painrelief /iscussalternatives. -
  • 5. SAIntS (Malawi) Biology Department April 2014 EDEXCEL A Level Biology Past Paper Analysis Paper 3B When? AS Core Practicals May 2009 The effect of temperature on membranes. Jan 2010 The antimicrobial properties of plants. May 2010 Enzyme concentration and rate of reaction. Jan 2011 Investigating plant mineral deficiencies. May 2011 The strength of plant fibres. Jan 2012 The vitamin C content of fruit juice. May 2012 The effect of caffeine on heart rate (Daphnia) Jan 2013 Totipotency and plant tissue culture May 2013 Observing mitosis