Lecture
This lecture covers the relevant interactions for biopolymers, focusing on the observable interactions and going beyond the Krat. The instructor explains the Flory approach for force-extension and polymer collapse. The lecture delves into the complex nature of water molecules, discussing dipole interactions and the quantum aspects of molecular orbitals. It also explores the hydrophobic interactions in biological polymers, emphasizing the 'fear of water' exhibited by hydrophobic molecules and their neutral properties. The consequences of hydrophobic interactions, such as the inability of oil to dissolve in water, are detailed. Additionally, the lecture touches on electrostatics in a medium with mobile particles and the Poisson-Boltzmann equation for charge distribution.