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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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Eggcellent Macromolecules Lab

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In this lab, we asked "can macromolecules be identified in an egg cell?" We found that we can identify macromolecules in an egg with the right solution to test it. For the egg membrane, we found lipids present from the color change, after submerging the egg into the Sudan III and water solution. The solution, originally bright red, changed to a medium red-ish orange. Lipids make up the membrane and stores energy. The egg white contained traces of protein when it showed the color change from blue to a dark purple, due to the added sodium hydroxide and copper sulfate. The cell produces the structural protein to feed the growing chick inside the egg. It also serves as protection. Lastly, there was polysaccharides in the egg yolk. With the help of another group's data, we concluded that the chestnut brown solution, iodine, changed to a blackish color. It stores energy for the cell, or the developing chick. This lab had many issues and errors to it. For one, our monosacchari...
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Unit 2 Reflection

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This unit was about the essential knowledge in chemistry. From learning about atoms to enzymes, we have learned about their functions and structures. One of the main points we touched upon was the big four macromolecules: carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates are saccharides, also commonly known as sugar, that are made of rings of carbon, hydrogen, and oxygen. It's used as energy storage for producers and a main source of energy for consumers. Lipids are molecules that have fat, phospholipids, oils, waves and cholesterol. They contain chains of fatty acids, carbon and hydrogen, and are nonpolar. It's also used as energy storage, but also makes up cell membranes and used to make hormones. Protein is large molecules made of amino acids chained together. This can support the body, speed up chemical reactions, help cells communicate, and let things through the cell membrane. One type of protein is enzymes. Enzymes are amino acids chained together, which ...
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