Obj 7 – Basic Structure & Functions of Carbohydrate , Protein & Lipid
Carbohyrates
-polysaccharides
-organic compound (CH2O)n
-most abundant forms = cellulose
-as storage =starch (plant) / glycogen (animal)
Lipid
-no polymers ; glycerol and fatty acid
-triacyglycerol (triglyceride)
-hydrophobic
-fats , phospholipids , steroids
-carboxyl group = fatty acid
-non-polar C-H bonds on fatty acid ‘tails’
-Ester linkage : 3 fatty acids to 1 gycerol (dehydration formation)
Protein
-monomer :amino acid (20 forms a.a)
-has ˜carboxyl (-COOH)
and amino group (NH2)
-polypeptides (dehydration reaction)
-peptide bonds (covalent bonds)
-comformation:
irregular contortions from R group bonding
- hydrophobic
- disulphide bridges
- hydrogen bonds
- ionic bonds
Dr Krum
The Rise of Caliphate 