Cells and Cell Projects
To introduce the cell or for review, you can’t beat manipulatives! Pictures of organelles that can be placed on a picture of an “empty” cell, (just the membrane or membrane and cell wall with cytoplasm and maybe ribosomes) can be a very effective strategy to engage students.
Have students try these:
- Assemble and compare the plant cell and the animal cell.
- Pass out the organelles. Call out the name of an organelle and have the student who holds it bring it to the board and explain its function before adding it to the cell.
- Have students choose the relevant organelles and use them to explain and enact an overview of protein synthesis.
Cell Projects Cell models made of cake, cookies, Jello, legos, styrofoam, cardboard, cloth. One student, a dedicated skater, even made his model using bits of hardware from an old skateboard, housed inside a small metal box that originally held skateboard bearings! The key to the organelles was pasted inside the lid. I ran into him in a cafe 15 years later, and he told me he still remembered that model!
So it seems that these projects are time well spent. But after retiring, I wondered. If the high school students have made cell models in middle school and a brief review is sufficient to bring it all back, or if you want to present your class with more of a challenge, then maybe it’s time to up the ante.
How about going beyond the generic cell model and asking /assigning students to create a model of a specific kind of cell? Many cells are fascinating in their own right. With around 200 cell types in the human body, there’s such a rich assortment to choose from! But some students might prefer some type of plant cell or even a single-celled organism. You’ll see some ideas on the next page.
Cell Project—High School Level Make a choice from the lists below for research and a presentation. Make a poster to help as you present. Differentiated Cells These cells are specialized cell types that perform special functions. General requirements and questions to consider: Compare and contrast the specific cell(s) you chose to the generic plant or animal cell studied in class. What important function does your cell perform for the organism it is part of? How does the structure of your cell relate to its function? Are any of your cell’s organelles absent or present in extremely large numbers? To what effect? How does your cell function to help maintain homeostasis? Explain. Give special attention to any interactions between cell pairs. Do the cell pairs act together to achieve balance for the organism they are part of? What might happen if the cells’ interaction gets out of balance? Do the cells help each other in some way? Cell Choices:
- a cardiac muscle cell
- a striated muscle cell
- neuron and glial cell
- sperm cell and Sertoli cell
- red blood cell and platelet
- vessel element
- sieve tube member/companion cell
Cell & Protein Choices:
- adipose (fat) cell and leptin
- plasma cell and antibodies
- chief cell and pepsin
- red blood cell and hemoglobin
- alpha cell of the pancreas and glucagon
- beta cell of the pancreas and insulin