# " The Big Picture!" by Mr C

VSB Science Blog

## Bio 12 Nov 5th Lesson

Biology 12 Lesson Outline                                      Date Nov 5th

 Last lessons Objective Osmosis Contrary to rumour..you still have to do this lab right! Evaluation Today’s Objectives https://www.youtube.com/watch?v=KDZEfJYr25A   Finding the isotonic solution to match a sweet potato   1.   Designing a lab to test osmosis in a living thing 2.   How to make a percent concentration 3.   Making graphs to compare change in mass with time and change in mass with concentration Topic Number One So what examples of labs are online?   http://baileycraddockapbio.weebly.com/osmosis-and-diffusion.html   Should you salt fries before or after cooking? http://science-mattersblog.blogspot.ca/2011/05/osmosis-should-i-salt-my-french-fries.html   Research on how to learn and evaluate the idea of osmosis. https://www.nabt.org/websites/institution/File/pdfs/publications/abt/2007/069-02-0031.pdf   McDonald’s story about “fries” http://gizmodo.com/5953061/how-mcdonalds-makes-its-delicious-french-fries   The Quest For French Fry Supremacy http://www.cookingissues.com/2010/04/27/the-quest-for-french-fry-supremacy-part-1/ Topic Number Two What is a percent solution? To calculate the mass percent or weight percent of a solution, you must divide the mass of the solute by the mass of the solution (both the solute and the solvent together) and then multiply by 100 to change it into percent.   The science behind why we use percent solutions in biology http://www.physiologyweb.com/calculators/percent_solutions_calculator.html   How does using molarity differ from percent solution   a)    A comparison http://www.dummies.com/how-to/content/how-to-measure-concentration-using-molarity-and-pe.html   A concept explaination http://www.chem1.com/acad/webtext/solut/solut-1.html   How to make a best fit line http://serc.carleton.edu/mathyouneed/graphing/bestfit.html   Youtube https://www.youtube.com/watch?v=ugmhjwAQDIE   How to handle scattered data http://www.saburchill.com/IBbiology/ICT/dataprocessing/022.html Topic Number Three How to write up a lab   Contrary to previous experiences..a lab report is not a cookbook recipe.   These are some examples:   http://uca.edu/writingcenter/files/2012/06/TS-Bio-Lab-Report-3.pdf   http://biology.about.com/od/biologylabhowtos/a/labreports.htm   http://www.wikihow.com/Write-a-Biology-Lab-Report   Special Notes   1)   Introduction: always discuss the problem you are trying to solve and a testable idea (the hypothesis) 2)   In materials and methods: Be specific so that you can go back and find sources of experimental error. 3)   Discussion and Results: This is the section where you manipulate and discuss the data and the lab. In the discussion you can look at sources of error. 4)   Conclusion: Always discuss in a simple statement the following three things: a)   How did your lab results relate to you testable idea. b)   What are the specific sources of error? c)    What variable could you use for a follow up lab Text book Reference Online sources for comparison of potatoes and osmosis http://www.123helpme.com/view.asp?id=148775 http://gwbiology.wikispaces.com/file/view/investigation01_annotated_en.pdf You tube Reference Wiki link on all things osmosis https://en.wikibooks.org/w/index.php?search=osmosis&title=Special%3ASearch&go=Go     Sample questions on osmosis   http://www.scienceprofonline.com/vcbc/diffusion-osmosis-test-qu.html   Simple quiz http://www.proprofs.com/quiz-school/story.php?title=diffusion-osmosis_2   Diffusion quiz http://biologycorner.com/quiz/qz_diffusion.html Take Home Message ·      Remember..where the salt goes ..the water flows ·      If you are going to do a job..might as well do it right (make up lab time after school)   ·      Sadly, sleeping on you text book is not like osmosis, information doesn’t just flow into your brain.   ·      “I give up” is not a viable option Complete lab due Next Friday

posted by Marc Bernard Carmichael in Biology 12,Biology 12 Lesson Outline and have No Comments