Biochemistry II Flashcards
describe and explain the properties of water
polar, O is -ve H is +ve due to electronegativities of its atoms
what shape is the water molecule
bent, forms a dipole
why are ionic and polar substances soluble in water
because water is also polar and so dipole interactions can occur between the molecules
what bond forms between H and O/N, and what shape is it
hydrogen bonding, linear(straight)
why are non-polar molecules hydrophobic
there is a powerful interaction between the water molecules (hydrogen bonding) and so they prefer to interact with themselves rather than the non-polar molecules
examples of non-polar/hydrophobic molecules
hydrocarbons (fats/oils)
what is the name given to the structure with a hydrophobic tail and hydrophilic head when in water
it forms micelles
example of an amphipathic molecule
sodium palmitate
