The cell nucleus is one of the largest organelles found in cells and also plays an important biological role. It composes about 10% of the total volume of the cell and is found near the center of eukaryotic cells. Its importance lies in its function as a storage site for DNA, our genetic material.
A monorail is a railway in which the track consists of a single rail. The term is also used to describe the beam of the system, or the vehicles traveling on such a beam or track.
funicular railway. 1. a short, very steep railway having two parallel sets of tracks, upon each of which runs a car or train raised or lowered by means of a cable that simultaneously lowers or raises the other car or train in such a way that the two are approximately counterbalanced. Origin of funicular railway.