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This biology video tutorial provides a basic introduction into the four levels of protein structure - primary, secondary, tertiary and quarternary structure. The primary structure of a protein is based on the sequence of amino acids. The secondary structure is based on localized shapes such as the alpha helix or the beta pleated sheet. The ...
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WORLDWIDE ENGINEERING 🌍 on Instagram: "Sometimes imagination becomes monumental. In China engineers and builders constructed a giant snowman using real packed snow. The structure is massive, as tall as a house, and required cranes and careful planning to stack and shape each section safely. Watching it rise from the ground to its final towering form shows how creativity and engineering can turn even snow into a large scale spectacle. This project is a reminder that engineering is not only about
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