( ( The neurones ) ( ( synapse ( to ( ( the ( end bulbs ) ) ( of ( the ( light ( sensitive cells ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS neurones)) (VP (VBP synapse) (PP (TO to) (NP (NP (DT the) (NN end) (NNS bulbs)) (PP (IN of) (NP (DT the) (JJ light) (JJ sensitive) (NNS cells)))))) (. .)))
The neurones synapse to the end bulbs of the light sensitive cells.
(ROOT (S (NP (DT The) (DT the) (NN synapse)) (VP (VBZ is) (NP (NP (DT the) (NN space)) (PP (IN between) (NP (NP (DT a) (NN neuron)) (CC and) (NP (DT the) (JJ next) (NN cell)))))) (. .)))
The the synapse is the space between a neuron and the next cell.