Fatty acid synthesis:  1- it occurs in prokaryotes and eukaryotes         2-NADPH is reductant                3-Fatty acuds are linked to ACP       4-the enzyme involved is fatty acid syntases                                  Oxidation:   1-it occurs in mitochondria of eukaryotes       2-NADH is reductant       3-Fatty acids are linked to CoA              4-Many enzymes are involved