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Remote Ready Biology Learning Activities has 50 remote-ready activities, which work for either your classroom or remote teaching.
Lab 3: Cell Size and Organism Size
JPierre and Terrible2s
Hypothesis: The more complex an organism, the more levels of cells and therefore more cells that the organism will have.
We compared a few different organisms. These organisms included: pine-stem, jejunum ("pig organ"), moss, buttercup, and a human uterus during menstration. When we used the microscope on smaller organisms (or less complex), such as the moss and the buttercup, with an objective of up to 40 microns, we were able to see some of the smallest cell bodies within a larger cluster of cells that make up the organism. However, when viewing larger or more complex organisms such as the pig organ or the human uterus at 40 microns, we were not able to view in much depth. In fact at 40 microns, we were not able to see the smaller cells cells that make up the organism at all, but instead only a blob. Therefore, we believe that because a human organ is a more complex organism (particularly in the case of the uterus), we would need a more sophisticated microscope to allow us to see it in higher microns to prove or disprove our hypothesis. From the tests we have done so far with our current equipment, our hypothesis has yet to be disproven. Yet, we do want to note that we cannot be completely certain of its "truth".
We would also like to note our experiences within the lab. Although we feel our hypothesis so far is strong, we did have trouble focusing the microscope lens at 40 microns and this could have led to a source of error in our data.