The number of protons in the nucleus of the atom.
        
                    
             
        
        
        
Diaphorase or dihydrolipoyl dehydrogenase is a flavoprotein enzyme capable of oxidizing the reduced form of NAD (NADH). This lipoamide dehydrogenase is a component of the glycine cleavage system, as well as of the alpha-ketoacid dehydrogenase complexes. It binds one FAD per protein subunit. The enzyme is provided in 3.2 M ammonium sulphate.
 
        
             
        
        
        
206 bones 
I hope this helps :)
        
                    
             
        
        
        
The main purpose is protection. The lipid bilayer protects the cell from viruses and other threats to the cell. It also maintains homeostasis within the cell by monitoring the amount of substances the enter or exit the cell. 
        
             
        
        
        
Environment, genetics, selective breeding, random mating, random fertilization, recombination, crossing over, etc