what is the process called that is used to split polyalanine?

Answer 1

Splitting any peptide into individual amino acids is called hydrolysis - literally 'splitting with water'. The amide bond is cleaved by addition of water : R-CO-NH-R' + H20 -> R-COOH + H2N-R'
In the body, reactions like this are catalysed by enzymes - usually peptidases. In the lab, you can do it easily by boiling the peptide in concentrated HCl overnight.

Answer 2

Process is nick named "lego building"

http://alpha2.bmc.uu.se/alwyn/How-to-O/How-to-O_frameset.html

Answer 3

hydrolisation. - the addition of a water molecule.