Successful Blog

This week in AP Biology we redid our lab, and this time it was a success. To prevent the vials from getting water leaked into it, we used super glue instead of petroleum jelly which is what we used at first and that is how the lab failed last week. The purpose of the lab is to get germinated and nongerminated peas and put them in 6 vials with a cotton ball soaked in KOH. The vials 1-3 are placed in a room temperature bath and vials 4-6 are placed in a chilled waterbath. After that is done, you then place the 6 respirometers on each vial and place them in their designated waterbath. With the vials successfully done, we could now get the data we needed. This data was to show the relationship of gas laws to the function of a respirometer and the effect of temperature and germination or nongermination on cell respiration. The germinating peas consumed the most oxygen in both the room temperature waterbath and the chilled waterbath because it performs cellular respiration while the others do not. The lab seems fairly simple, but it is a very tedious process.