Opening Activity: Oct 21, 2016 Describe the controversy discussed in the article about HeLa cells (write in your lab notebook) List a question do you have about this topic?  Write out your thoughts about the way the cells were handled. I can… Take notes about important science concepts Use resources to investigate questions about the cell membrane Homework: CER will be due Monday Food Molecules quiz Tuesday

Class data We’ll identify trends and claims from the data collected by all four of Ms. Fox’s biology classes See handouts

: Why would water and glucose move through the membrane but not starch or proteins? SUGAR (GLUCOSE) CARBOHYDRATES: FATS STARCH Molecule Credit: Craig Douglas, Michigan State University Use Slides 3-7 to introduce students to fats, carbohydrates, and proteins, the key organic materials in food. They can fill in the cells for those materials on the worksheet as they discuss each organic material. FIBER PROTEINS

Science Concepts and Vocabulary Together we’ll take notes in our lab notebook about the ideas of semi-permeability, diffusion, and osmosis Chose the Cornell, Outline, or Mind Map method

The structure of the cell membrane Together we will use a worksheet to label the parts of the cell membrane (overhead projector)

New vocabulary Semi-permeable: some molecules move through membrane but other’s cannot (protein/starch) Concentration gradient: a difference in in the concentration of molecules in/out of a cell Diffusion: the movement of a molecules from high concentration to low concentration. Osmosis: Movement of water across a semi-permeable membrane, from high to low concentration.

Lab writing assignment and resources Your teacher will pass out the rubric for this assignment and we’ll review the requirements as a class Check out the class questions (on poster paper) Use resources to investigate your additional questions (HIMS library books, articles, online resources on HIMS bio) You’ll staple your predictions lab report to your CER writing and turn in on Monday 10/ 21

Class list of questions What is the size and scale of the parts of cell membrane? How does water move through the cell membrane? What would happen to the cell if the membrane was broken or damaged? How is the fluid on the inside and outside of the cell the same or different? What interactions are happening at the cell membrane? (inside or outside the cell)

Online Resources about cell structure and function: New Look at Cell Membrane Reveals Surprising Organization (New research, 2013) https://www.sciencedaily.com/releases/2013/01/130128151924.htm   Biochemists devise new technique for blueprinting cell membrane proteins (New research, 2015) http://phys.org/news/2015-06-biochemists-technique-blueprinting-cell-membrane.html The Cell: A Molecular Approach (text book chapter) https://www.ncbi.nlm.nih.gov/books/NBK9928/ Looking at the Structure of Cells in the Microscope (Text book chapter, focus on size and scale and microscopy) https://www.ncbi.nlm.nih.gov/books/NBK26880/ Bozeman Science http://www.bozemanscience.com/015-cell-membrane/ Ameoba sisters https://www.youtube.com/watch?v=Ptmlvtei8hw Bonus creative research (NOT for Lab assignment): Free Sewing Pattern: How to Make an Animal Softie http://www.pickledokrabycharlie.com/2014/09/free-sewing-pattern-animal-cell.html