Project Assigned: October 15, 2008
Project Due: October 22, 2008
Purpose: The purpose of this lab is to make a 3D model of a cell in order to better understand the parts and workings of a cell. Choose objects that you feel best represent organelles.
Guidelines:
You are required to make a model of an animal cell. If you decide to also make a model of a plant cell, you can receive up to 20 points extra credit for your project grade.
**(total possible then would be 120/100)
Supplies:2 Ziploc baggieslight Karo syrup, oil, or clear detergentassorted other objects to represent organelles(could include cereal, balloons, gummi worms, mints, fruit slices, dried fruit, matches, Ramen noodles, buttons, Christmas lights, peanuts, rope licorice, jelly beans, sesame seeds, other candies, toothpicks, peas in a pod, dried beans, various shapes and colors of pasta, yarn, clay, Styrofoam, etc.) Be creative. Your parts should “look like” the organelles that they represent.
Pour Karo syrup, oil, or clear dish detergent into baggie, then put that baggie into a second one for extra strength. This will be your cell membrane and the cytoplasm.
Decide which objects might best represent the organelles in a cell, and add them. Your organelles should “look like” the ones represented in diagrams in your textbook and at various Internet sites such as Cells Alive. Be unique and creative, use any interesting and appropriate objects, in any combination. I encourage you to use “found” and re-cycled objects from around your house. Please do not buy items if you do not have to. (Don't eat too many of the organelles...)
nucleus - information center-houses DNA. Has its own membrane, with nucleolus in center which makes ribosomes (which make protein for the cell).proteins - one of basic structural and functional units of cell made by ribosomes, made up of strings of amino acids. One molecule is not an organelle. Glitter could represent proteins on their way to becoming part of an organelle.
endoplasmic reticulum (ER) - a network of membranes with two regions: rough (ribosomes are bound to it) and smooth (lipid molecules are made here).mitochondria - ”power plants”--they make energy from glucose, using oxygen and producing carbon dioxide (taken care of by our lungs).
Ribosomes -- ribosomes make proteins that will be used inside the cell.lysosomes - small sacks containing enzymes, which tear down old molecules of DNA, protein, or lipid into small units which can be reused to make new molecules.golgi complex - sort newly made proteins and sends them to their proper places within the cell or outside the cell (by secreting them).
Once you have completed your model, make a key on a sheet of paper that illustrates the various parts of your cell. The key should list every organelle and show a picture of the item/object used to represent it in your model. Pay attention to the appearance of your key, and be sure that your spelling and language mechanics are good.
You will use the following rubric to see which organelles need to be present, accurate, and labeled in your key. You will turn your copy of the rubric when you turn in your 3-D model.
3-D Plant Cell Model Project Rubric
Grading:
You will initially start with a 100 for your project grade. You will lose points for the following items:
Missing an organelle (deduct 5 points for each organelle)
Missing an organelle on the key (deduct 5 points for each label)
Organelle is mislabeled (deduct 4 points for each mistake)
No name on project (deduct 4 points)
Project is sloppy (deduct up to 10 points)
Project is not constructed according to directions (deduct 30 points)
Extra Credit
Student also constructed a model of a plant cell – add 20 points
