Discussions 1: cells and macromolecules 25 min Quiz question I 2. Quiz question 2 3. Ouiz question 3 4. Non-covalent interactions: hydrogen bonds hydrophobic interaction 5. Protein purification 6. DNA purity 7. Open questionsDiscussions 1: Cells and macromolecules (25 min) 1. Quiz question 1 2. Quiz question 2 3. Quiz question 3 4. Non-covalent interactions: hydrogen bonds, hydrophobic interaction 5. Protein purification 6. DNA purity 7. Open questions