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Geologic Timeline Reflection

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In this project, we created a timeline of Earth's history, which is broken down into eras, periods, and epochs. One of the major events that happened was the formation of our planet. Occurring 4.5 billion years ago, massive rocks collided and used the power of gravity to pull other rocks within it. Without this huge collision, we wouldn't be standing here on earth today! Another major event would be the when oxygen became more abundant 2.4 billion years ago, creating breathable air for us.There is a hypothesis about how the first oxygen caused the entire planet to freeze, this event would be called a "Snowball Earth". Lastly, the most distinctive and notable event would be the dinosaur extinction 65 million years ago. There are many theories as to why the dinosaurs vanished. The most common explanation would be the asteroid hitting the Earth and vaporizing. It killed off about 80% of species, and the remaining would evolve into the feathery, flying animals you see t...
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Jeanie in a Bleach Bottle (Jean Lab)

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Our experiment had a normal result. In this lab, we asked the question, "What concentration of bleach is best to fade the color out of the new denim material in 10 minutes without visible damage to the fabric?" We found that the best concentration is 50% concentrate. The amounts of color removal was decreasing with the amount of concentration. We did have an issue with the fabric damage. The average should have a smooth decrease, but there was a hiccup from 100% to 50%. Like stated before, there should have been a smooth decrease, but instead there was a hiccup in the average. The 50% concentration had worse fabric damage than 100%. There were holes in the fabric that might have been due to the bleach. In future experiments, I would recommend to have even pieces of fabric that had no damage in the beginning to avoid the problem of having the fabric damage data impacted. This lab was done to demonstrate the best amount of bleach used in jeans without visible damage to the ...
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Human DNA Extraction Lab

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In this disgusting lab, we asked the question, "How can DNA be separated from cheek cells in order to study it". We concluded that if we wanted to separate DNA from our rosy cheeks, we'd have to do a number of steps. Three steps, to be exact. Those steps would be homogenization , lysis , and precipitation . To achieve homogenization, we used Gatorade to break down the cell tissue. Because of Gatorade's polarity , we could use it. Gatorade has electrolytes, like sodium and potassium, that athletes sweat out during physical activity. We took a shot of Gatorade and swished it in out mouths, hoping to gain the cheek cells needed. After, we spitted it back into a cup. The next step was lysis. We added salt and detergent into the mix, to emulsify the proteins and lipids of the cell. Next, was the protease solution: pineapple juice (tempted to make a pen-pineapple-apple-pen joke). The pineapple juice is a catabolic protease, which is to break down the histones further. M...
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