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.
The Union Pacific (UP, UPRR) railroad is a standard-gauge US Class 1 (or major) freight railroad in the United States and is the largest and oldest currently operating railroad in both the United States and the world, which also serves as the main freight railroad in the United States as well as also being considered to be the very last of the ...