( ( Particular attention ) ( ( will ( be ( ( given ( to ( ( the ( four classes ) ) ( of ( ( biochemicals and ) ( their role ) ) ) ) ) ) ( in ( living systems ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Particular) (NN attention)) (VP (MD will) (VP (VB be) (VP (VBN given) (PP (TO to) (NP (NP (DT the) (CD four) (NNS classes)) (PP (IN of) (NP (NP (NNS biochemicals)) (CC and) (NP (PRP$ their) (NN role)))))) (PP (IN in) (NP (VBG living) (NNS systems)))))) (. .)))
Particular attention will be given to the four classes of biochemicals and their role in living systems.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD four) (NNS classes)) (PP (IN of) (NP (JJ biochemical) (NNS compounds))))) (. .)))