https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:energy-and-matter-in-biological-systems/x230b3ff252126bb6:biomolecules-and-reactions/v/introduction-to-proteins-and-amino-acids 2023-09-14T11:07:34.466749579Z Introduction to proteins and amino acids Proteins, large biomolecules or macromolecules, play a vital role in almost every biological process. They are made up of chains of amino acids, which are their building blocks. These chains, known as polypeptides, can form complex shapes, contributing to the diverse functions of proteins. Proteins can provide structure, facilitate muscle contraction, catalyze reactions as enzymes, and participate in immune response and signaling. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/7d140eef-7cac-45a0-9370-f705e69d9d10_1280_720_base.png Introduction to proteins and amino acids Proteins, large biomolecules or macromolecules, play a vital role in almost every biological process. They are made up of chains of amino acids, which are their building blocks. These chains, known as polypeptides, can form complex shapes, contributing to the diverse functions of proteins. Proteins can provide structure, facilitate muscle contraction, catalyze reactions as enzymes, and participate in immune response and signaling. https://cdn.kastatic.org/ka-youtube-converted/78QUeXVKiJ4.mp4/78QUeXVKiJ4.mp4 353 Proteins (structure, nutrition, and functional diversity) https://www.khanacademy.org/science/ap-biology/chemistry-of-life/properties-structure-and-function-of-biological-macromolecules/v/overview-of-protein-structure 2021-03-18T10:33:22Z Overview of protein structure Primary, secondary, tertiary and quaternary protein structure. Beta pleated sheets and alpha helices. video https://cdn.kastatic.org/googleusercontent/UbkThjoOiDiecZh69T1rBXQPNKHCs6-M6Ypbkwo3sGFGT56yYDBRb3ATwL9MIYIDZF7em5M91F7kd0IG6e_Pc8SQDg Overview of protein structure Primary, secondary, tertiary and quaternary protein structure. Beta pleated sheets and alpha helices. https://cdn.kastatic.org/ka-youtube-converted/MODnIkQvyz0.mp4/MODnIkQvyz0.mp4 598 Proteins (structure, nutrition, and functional diversity) https://www.khanacademy.org/science/grade-12-chemistry-snc-aligned/x7a43e770fc9e15cf:biochemistry/x7a43e770fc9e15cf:proteins-structure-nutrition-and-functional-diversity/v/glucose-insulin-and-diabetes 2023-08-17T23:33:36.770424498Z Glucose insulin and diabetes Explore how glucose, a simple sugar, fuels cells in the human body. Understand the crucial role of insulin in glucose absorption, and learn about the complications that arise when this process is disrupted, leading to conditions like type 1 and type 2 diabetes. Sal Khan video https://cdn.kastatic.org/googleusercontent/AcrzKT0shcZpWzxBJRB1mcnZVNsLctSqSzp24yqVZdA5IsvTGYdj6ZIKb7KPah6XSZ8zlWQ7m0kTQTCFInAClOcp Glucose insulin and diabetes Explore how glucose, a simple sugar, fuels cells in the human body. Understand the crucial role of insulin in glucose absorption, and learn about the complications that arise when this process is disrupted, leading to conditions like type 1 and type 2 diabetes. https://cdn.kastatic.org/ka-youtube-converted/rPLjSY00JlE.mp4/rPLjSY00JlE.mp4 444 Proteins (structure, nutrition, and functional diversity) https://www.khanacademy.org/science/biology/macromolecules/proteins-and-amino-acids/a/orders-of-protein-structure 2025-05-22T06:48:27.648113164Z Orders of protein structure Orders of protein structure: primary, secondary, tertiary, and quaternary. Alpha helix and beta pleated sheet. article https://www.khanacademy.org/science/biology/macromolecules/proteins-and-amino-acids/a/introduction-to-proteins-and-amino-acids 2021-04-29T07:56:49Z Introduction to proteins and amino acids Different types of proteins. The structure and properties of amino acids. Formation of peptide bonds. article https://www.khanacademy.org/science/telangana-class-12-chemistry/x50160c6c142df488:biomolecules/x50160c6c142df488:proteins/a/protein-folding-and-denaturation 2024-09-10T20:20:16.162421435Z Protein folding and denaturation This article goes over the forces driving protein folding and the forces that stabilize protein structure, as well as causes of protein denaturation. article