Biological Molecules
B2 , B3 , B 4
Water and It’s role in biological Systems
 describe how the polarity of the water molecule results in hydrogen
bonding
Polar bonding:
Hydrogen bonds:
Unique Properties of Water
describe the role of water as a solvent, temperature regulator, and lubricant

1. “Universal Solvent”
Hydrophilic vs Hydrophobic Interactions:
Temperature Regulation by Water:
pH
Neutral
Acids
Bases
[H+]
[H+]
[H+]
[OH--]
[OH--]
[OH--]
Buffers:
Example of biological buffer:
Able to donate: