Practice Biology Ia Diffusion - 2410 Words

Practice Internal Assessment Report Christine Zhu St Pauls Grammar School 00296648 Biology HL Trial 1 amp; 2: 8/4/13 Trial 3 amp; 4: 10/4/13 Photo credits: Smarties by Andrew Dean, copyright Rebecca Douglas, retrieved 9/4/13 http://rebeccadouglas.photoshelter.com/image/I0000WDNZi_s2W4A Smarties Diffusion Experiment RESEARCH QUESTION How does changing the colour of smarties affect the extent of its passive diffusion? INTRODUCTION Passive diffusion, also known as simple diffusion, is used to describe the exergonic reaction of a substance where the substance passes in the direction of the concentration gradient. Most of the molecules move from the area of high concentration, inside the membrane of a cell, to the outside where there is†¦show more content†¦Place one of each coloured smartie halfway (8cm from the centre) across each of the four lines 4. Repeat steps 1-3 for the second piece of filter paper 5. Number the first piece of paper with the number 1 and second piece of paper with the number 2 6. Squirt water once from bottle onto each of the smarties on both pieces of filter paper 7. Wait for approximately 5-10 minutes before measuring the extent of colour (diffusion) that has spread from the smartie 8. Tabulate results 9. Use Excel to calculate averages for data analysing. Also, use Excel to calculate the standard deviation to show variances in data 10. Graph results into a column graph using Excel Trials 3 amp; 4 1. Fold the filter paper into quarters lightly, just enough to obtain clean folds 2. Pick out two of each of the following smarties: red, blue, purple and orange 3. Place one of each coloured smartie halfway (8cm from the centre) across each of the four folds 4. Fill the pipette to halfway and squirt once for each smartie, one piece of filter paper should not need any refills 5. Repeat steps 1-4 for the second piece of filter paper 6. Number the first piece of paper with the number 3 and second piece of paper with the number 4 7. Wait for approximately 5-10 minutes before measuring the extent of colour (diffusion) that has spread from the smartie 8. Tabulate results 9.Show MoreRelatedOrganisational Theory230255 Words   |  922 Pagesresearched and readers are encouraged to view chapters as a starting point for getting to grips with the field of organization theory. Dr Martin Brigham, Lancaster University, UK McAuley et al. provide a highly readable account of ideas, perspectives and practices of organization. By thoroughly explaining, analyzing and exploring organization theory the book increases the understanding of a field that in recent years has become ever more fragmented. Organization theory is central to managing, organizing andRead MorePorters Five Forces in Beer Market75399 Words   |  302 Pagesfirmly convinced that there is huge potential to rescope the cost base in Eastern Europe by realising synergies resulting from the Scottish Newcastle transaction. In particular, procurement synergies will be significant, but implementation of best practice from the Northern Western European Excellence programmes will add value too. Thank you On behalf of Carlsberg, I would like to thank all of our employees for their extraordinary efforts over the past year. I would also like to thank our customersRead MorePublic Fe Reference Handbook.Pdf46179 Words   |  185 PagesIURP ZULWLQJ LQ WKH Reference Handbook GXULQJ WKH H[DP DGPLQLVWUDWLRQ Th ere are no sample questions or solutions included in the Reference Handbook ²H[DPLQHHV FDQ VHOIWHVW XVLQJ RQH of the NCEES FE Sample Questions and Solutions books or online practice exams, all of which may be purchased by FDOOLQJ   RU YLVLWLQJ RXU :HE VLWH DW ZZZQFHHVRUJ 7KH PDWHULDO LQFOXGHG LQ WKH FE Supplied-Reference Handbook LV QRW DOOHQFRPSDVVLQJ RU H[KDXVWLYH 1((6 LQ QR HYHQW VKDOO EH OLDEOH IRU QRWRead MoreStephen P. Robbins Timothy A. Judge (2011) Organizational Behaviour 15th Edition New Jersey: Prentice Hall393164 Words   |  1573 PagesCommunication 335 Leadership 367 Power and Politics 411 Conflict and Negotiation 445 Foundations of Organization Structure 479 v vi BRIEF CONTENTS 4 The Organization System 16 Organizational Culture 511 17 Human Resource Policies and Practices 543 18 Organizational Change and Stress Management 577 Appendix A Research in Organizational Behavior Comprehensive Cases Indexes Glindex 637 663 616 623 Contents Preface xxii 1 1 Introduction What Is Organizational Behavior