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ANIMAL CELL ________________________________________________________________________ PLANT CELL Making a Cell Model Due Date_____________________________ Assignment : Construct a model of a cell that demonstrates your knowledge of cell parts and their relationship to each other in the cell. Choose one only…plant cell or animal cell. Once you decide which type of cell you will create a model of, you will have to decide what kind of model to make. You may choose from the following: a. a clay model $$$ b. a styrofoam model $$ c. a plastic baggie model $ Guidelines for each model type are attached. All parts must be labeled (if possible), and your model must be accompanied by a neatly printed or typed sheet listing all required cell parts along with a description of what they look like, what their function is in the cell and how they fulfill their function. (If you are doing the plastic baggie model, you will have to identify which item represents which part. For example…cell wall-green Saran Wrap). Example (from a plant cell): Cell Wall: (Green Saran Wrap)- A cellulose layer that surrounds the plasma membrane of plant cells. Because it is very porous, the cell wall is permeable to molecules and ions that cannot pass through the plasma membrane by simple diffusion. During plasmolysis, the cell membrane loses water and its contents shrink up into a ball, while the outer cell wall remains intact. Shrubs and trees have a thickened secondary cell wall containing lignin, a brown phenolic polymer that imparts great strength and hardness to wood. Ironwoods such as lignum vitae sink in water because of the density of their heavy, thick-walled, lignified cells. Sources: a. Your textbook b. Website…http://waynesword.palomar.edu/lmexer1a.htm c. Website…http://www.cellsalive.com/cells/plntcell.htm d. Website…http://www.enchantedlearning.com/subjects/animals/ cell/index.shtml e. Website…http://www.enchantedlearning.com/subjects/plants/ cell/ The cell diagrams on the first page were copied from the website in “b”. Materials can be obtained from the grocery store, a craft store, and/or a “99 Cent” store. You will be graded on: 1. Neatness 2. Accuracy…you must include all of the required parts and label them clearly (labels not required on the plastic baggie model). Additionally, your “write-up” must also include all of the required parts and have complete descriptions for each one. 3. Timeliness…your model must be turned in on time! 4. Effort…if it looks “thrown together”, your grade will be lowered. The attached diagrams (page 1) show what your cell should look like and which organelles and other cell parts must be identified. The model must not exceed 10”wide x 10” deep by 10”long. 1. Modeling Clay Method: Purchase various colors of modeling clay (do not use Play-Doh) at Michaels or other craft store. You will need a larger quantity of whichever color you decide to use for the cell membrane. Using various colors of clay, form shapes that look like each part of the cell. Using toothpicks or glue, affix each clay “part” to the clay cell membrane. Use a toothpick flag to label the “parts”. 2. Styrofoam Model: Purchase a styrofoam “ball” (animal cell) or rectangle (plant cell) at a craft store. Use household items like macaroni noodles, candy, buttons etc. to represent the organelles (cell parts) in the cell. Be creative! Label the parts with toothpick flags. 3. Plastic Baggie Model: Fill a sandwich-size Ziplock bag with corn syrup (cytoplasm). Put household items (like those mentioned above) in to represent the organelles (cell parts) contained in the cell. Be creative! You will probably not be able to label the parts so cross reference them with their corresponding organelle description on the written list (Refer back to the “cell wall – green Saran Wrap” example).