bio reading 24-09- chemistry of lipid bilayer

hydrophobic effect

observation that non polar molecules aggregate in aqueous solutions

bilayer formation is energetically

favourable and spontaneous

enthalpy (H)

measure of heat released or absorbed by a process

process that release heat are often

spontaneous

entropy (S)

mesure of the disorder of a system of freedom of motions of atoms or molecules in a system

processes reduce order or increase freedom of motion are often

spontaneous

ΔG is the

change in free energy of a system

ΔG < 0

thermodynamically favorable (spontaneous)

ΔG > 0

thermodynamically unfavorable (not

spontaneous)

ΔG = 0

equilibrium

ΔS

the change in entropy

ΔH is

the change in the enthalpy of a system

phospholipid bilayer/ liposomes are formed because

energetically favourable

lower energy = more stable