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YouTubeThe Organic Chemistry Tutor
Protein Structure - Primary, Secondary, Tertiary, & Quarternary - Biology
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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Live From The 818 on Instagram: "Firefighters called in a heavy rescue team to help lift the semi back onto the roadway, and crews remained on scene for nearly three hours before clearing around 2 p.m., officials said. No injuries were reported. #breakingnews #news #losangeles #california #pacoima #accident #losangelescalifornia #chp #lafd #trending"
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Live From The 818 on Instagram: "Firefighters called in a heavy rescue team to help lift the semi back onto the roadway, and crews remained on scene for nearly three hours before clearing around 2 p.m., officials said. No injuries were reported. #breakingnews #news #losangeles #california #pacoima #accident #losangelescalifornia #chp #lafd #trending"
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