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Understanding Biological Macromolecules: Carbohydrates, Lipids, Proteins, and Nucleic Acids

This text provides an overview of the four major classes of biological macromolecules: carbohydrates, lipids, proteins, and nucleic acids. It explains the structure and functions of each category, detailing how carbohydrates are made of monosaccharides and form rings, how lipids consist of glycerol and fatty acids, the complex structure of proteins from amino acids and their various structural levels, and the composition of nucleic acids from nucleotides. Each macromolecule plays a crucial role in the biology of living organisms.

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Understanding Biological Macromolecules: Carbohydrates, Lipids, Proteins, and Nucleic Acids

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Presentation Transcript

  1. Breaking a polymer: Hydrolysis Making a polymer: Condensation

  2. 1. Carbohydrates—Made of monosaccharides

  3. In solution, most simple sugars form RINGS.

  4. Disaccharides

  5. Polysaccharides Starch: Cellulose:

  6. 2. Lipids—Contain large nonpolar regions Glycerol + 3 Fatty Acids = Triglyceride (fat)

  7. Fats can be saturated or unsaturated Solid at room temperature Liquid at room temperature

  8. Phospholipids are the main components of cell membranes

  9. Cell membranes are phospholipidbilayers

  10. CHOLESTEROL Steroids have 4 rings and a tail

  11. 3. Proteins—Made of amino acids Peptide bonds form between amino acids Primary structure– sequence of amino acids

  12. Proteins have 3 dimensional structures

  13. Secondary Structure Alpha Helix And Beta Pleated Sheet Held together by H-bonds

  14. Tertiary Structure—held together by hydrogen bonds, disulfide bridges, hydrophobic interactions, van der Waals forces, and ionic (electrostatic) interactions

  15. Quaternary Structure—held together by hydrogen bonds, disulfide bridges, hydrophobic interactions, van der Waals forces, and ionic (electrostatic) interactions

  16. From Primary to Quaternary

  17. 4. Nucleic Acids—Made of nucleotides

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