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Transcript
Comparing Cells Lab Analysis Questions 1. Describe 3 differences between the plant cells and the animal cells you looked at. 2. Thinking about how the structure and arrangement of cells contributes to the functioning of the organism, propose reasons for the differences you mentioned. 3. Why do you think we stained the cheek cells but not stain the Elodea cells? 4. Which two of the following three were more similar Elodea Leaf, Potato, Onion? Why do you think accounts for the differences and similarities? 5. a. What type of organic molecule is starch made of? _________________________________ b. What is the function of starch in plants? c. Why do you think that the potato tested positive for starch? 6. How do the shapes of Animal cells compare to the shapes of plant cells? b. Propose a reason for the difference. c. Would changing the shape of either type of cell be an advantage for the organism? Why or why not? 7. a. What organelles did you see under the microscope? b. Based on what you learned when we built in the giant cell project, why do you think that we didn’t see all of the organelles? c. What could we use to see the other organelles? Oct 2310:58 AM Oct 2411:36 AM 1 Water is Polar! Why is this important? http://www.classzone.com/cz/books/bio_07/get_chapter_group.htm?cin=1&ci=1 &rg=animated_biology&at=animated_biology&npos=1&spos=1&var=animated_biology http://www.classzone.com/cz/books/bio_07/resources/htmls/animated_biology/unit1/bio_ch02_ 0041_ab_bonding.html Oct 2310:55 AM Remember: the phospholipid heads are polar and like water, the tails are nonpolar and don't like water. Try to make two models using the clips and beads so that the heads are in contact with the water but the tails are not. Oct 2311:12 AM 2 Does your model look like this? Oct 2311:16 AM Oct 2310:55 AM 3 Cell Transport Active vs. Passive http://www.wiley.com/legacy/college/boyer/0470003790/animations/membrane_transport/mem brane_transport.htm Diffusion Annimation http://www.google.com/imgres?um=1&hl=en&client=firefoxa&sa=N&rls=org.mozilla:en US:official&authuser=0&biw=1024&bih=629&tbm=isch&tbnid=lQj3wtZIMzmGuM: &imgrefurl=http://leavingbio.net/osmosis%2520and% 2520diffusion.htm&docid=Nu4H6TjrrU2loM&imgurl=http://leavingbio.net/OSMOSIS% 252520AND%252520DIFFUSION_files/image005.gif&w=640&h=480 &ei=PrWGUI2GF4r89QTyhICgCQ&zoom=1&iact=hc&dur=22&sig= 101379303775870505402&page=1&tbnh=129&tbnw=172&start=0&ndsp=12&ved= 1t:429,r:1,s:0,i:141&tx=151&ty=96&vpx=285&vpy=183&hovh=194&hovw=259 Cell Transport Tutorials http://www.classzone.com/cz/books/bio_07/resources/htmls/animated_biology/unit2/bio_ch03_ 0093_ab_cellmem.html Oct 2311:07 AM Osmosis Oct 2311:25 AM 4