Tuesday, September 9, 2014

Molecular Bio

Molecules: Carbohydrates | Lipids | Proteins | Nuclear Acids
*Macromolecules

Enzymes: specialized macromolecules that speed up reactions.
Dehydration reaction: Monomers are connected thru the loss of a water molecules.
Hydrolysis: Polymer bonds are broken thru the addition of water molecules.
-Hydrogen from water molecule attaches to one monomer while -OH group attaches itself to the adjacent monomer.

Carbohydrates(Sugars)
Monosaccharides: simple sugars

  • More complex sugars are constructed of this
  • CxHx(2)Ox
  • Consist of Carbonyl group and multiple -OH groups and depending on the Carbonyl group it is either an ketone or aldehyde.
  • Generally ends in -ose
  • Ranges from 3-7 carbons long. 
  • In aqueous solution, 5-6 carbons tend to form rings.
Dissaccharide: Two monosaccharides joined by glycosidic linkage
*glycosidic linkage: covalent bond via dehydration reaction

Polysaccharides: macromolecules, monomers joined by a few hundred glycosidic linkages.
-Purpose:

  • Storage material
  • hydrolyzed as needed to provide sugar for cells
  • Serve as building material for structures that protect the cell or the whole organism