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Macromolecules: Key Elements and Bonds

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  1. Macromolecules Chapter 2 Section 3

  2. Carbon • Hydrogen • Oxygen • Nitrogen • Phosphorus • Sulfur Next to each write down the # of valence e’s & how many bonds each one can form. What are the 6 elements most common to living things?

  3. Carbon forms the backbone of macromolecules • Why? • 4 valence electrons  4 bonds • Forms long chains Carbon

  4. Macromolecules • Carbohydrates • Lipids • Proteins • Nucleic Acids

  5. Which one of the following molecules are carbohydrates?

  6. Indicator • Iodine is an indicator for carbohydrates! • Bread Demo

  7. Macromolecules • Carbohydrates • Lipids • Proteins • Nucleic Acids

  8. Count the C,H,O! Write down the ratio!

  9. Macromolecules • Carbohydrates • Lipids • Proteins • Nucleic Acids

  10. Peptide Bond Bond between acid and amino group in a protein

  11. Polypeptide

  12. Shape is Important!

  13. Macromolecules • Carbohydrates • Lipids • Proteins • Nucleic Acids

  14. Nucleotide Structure

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