( ( ( ( ( Chromosomes ( are ( separated ( using ( ( the tracks ) ( of ( the microtubules ) ) ) ) ) ) ) , ) and ) ( ( the cell ) ( divides ( by ( ( ( pulling ( in ( its ( surrounding membrane ) ) ) ) , ) ( causing ( a ( cleavage furrow ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Chromosomes)) (VP (VBP are) (VP (VBN separated) (S (VP (VBG using) (NP (NP (DT the) (NNS tracks)) (PP (IN of) (NP (DT the) (NNS microtubules))))))))) (, ,) (CC and) (S (NP (DT the) (NN cell)) (VP (VBZ divides) (PP (IN by) (S (VP (VP (VBG pulling) (PP (IN in) (NP (PRP$ its) (VBG surrounding) (NNS membrane)))) (, ,) (VP (VBG causing) (NP (DT a) (JJ cleavage) (NN furrow)))))))) (. .)))
Chromosomes are separated using the tracks of the microtubules, and the cell divides by pulling in its surrounding membrane, causing a cleavage furrow.
(ROOT (S (NP (JJ Biological) (NNS membranes)) (VP (VP (VBP surround) (NP (NNS cells))) (CC and) (VP (VBP serve) (S (VP (TO to) (VP (VB keep) (NP (NP (DT the) (NNS insides)) (VP (VBN separated) (PP (IN from) (NP (DT the) (NNS outsides)))))))))) (. .)))