( ( Since ( ( these ( polymer molecules ) ) ( are ( so large ) ) ) ) ( ( -LRB- ( ( ( containing up ) ( to ( hundreds ( of ( monomer molecules ) ) ) ) ) -RRB- ) ) ( , ( they ( ( are ( called macromolecules ) ) . ) ) ) ) )
(ROOT (S (SBAR (IN Since) (S (NP (DT these) (NNP polymer) (NNS molecules)) (VP (VBP are) (ADJP (RB so) (JJ large))))) (PRN (-LRB- -LRB-) (S (VP (VBG containing) (PRT (RP up)) (PP (TO to) (NP (NP (NNS hundreds)) (PP (IN of) (NP (NN monomer) (NNS molecules))))))) (-RRB- -RRB-)) (, ,) (NP (PRP they)) (VP (VBP are) (VP (VBN called) (NP (NNS macromolecules)))) (. .)))
Since these polymer molecules are so large(containing up to hundreds of monomer molecules), they are called macromolecules .
(ROOT (S (NP (DT Any) (JJ large) (NN molecule)) (VP (VBZ is) (VP (VBN referred) (PP (TO to) (NP (RB as) (DT a) (NN macromolecule))))) (. .)))