As the weekend is wrapping up, this is my last week for two of my classes and next week the last class will be finished. The term has been so busy, but I can hardly believe 10 weeks have come and gone. This weekend I spent quite a bit of time on my final lab for Biological demonstrations. I ended up selected a lab on enzymes, where students test different juices with jello as well as canned, fresh and frozen pineapple in jello. The reason for doing this is certain fruits have enzymes in them, proteases to be exact that actually can act as a meat tenderizer as well as have various properties that can be used for medicinal purposes. Pineapples for example, have an enzyme, bromelain, that has been used to treat third degree burns, arthritis, autoimmune diseases and various other ailments. The enzyme is predominantly found in the stem of the pineapple. Kiwi and papaya have their own enzymes as well. When the juices or fruits with active enzymes interact with jello the jello will not solidify as usually due to the enzymatic activity, really kind of cool. I have practiced it a few times and hope all goes well during the actual lab in class. This week marks the end of the 1st quarter, so it will be my first time fully calculating grades and next week we have parent teacher conferences, where parents can come in, get their students report cards and meet with their teachers. If the parents/guardians do not come in, the grades will be mailed one week later. Also this week is Veterans Day, so I will have Wednesday off, which will be a nice break in the middle of the week. So this week will be really busy graduate class-wise and I am sure a little chaotic in my internship with a day off and it being the end of the quarter.
Below I have included pictures from the egg demonstration I did right before Halloween so you can see what the students saw. So the brief background, eggs have a semi-permeable membrane under the shell, so in all of the below pictures, the egg shell has been removed and has been tested with different substances to show diffusion to the students (molecules moving from high to low concentration). The first two photos, the egg expands and turns orange. The second photos were not in any solution, but show the nude color egg (nude color is their membrane). The next photo is of an egg in water, it expanded, the next photo is a different angle of an egg not in solution and the last photo is an egg in corn syrup, it shriveled.
The below picture is of an egg w/o it's shell in water with orange food coloring
The below photo is of an egg w/o it's shell.
The above photo is of the egg w/o it's shell in water.^
The next photo is an aerial view of an egg w/o it's shell.
The photo the left is of an egg w/o its shell in corn syrup
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