The Latin name is from the Japanese name for T. sieboldii. T. canadensis and T. heterophylla were discovered early (before 1800) and until 1855 were simply treated as species of Pinus, but in 1842 T. sieboldii, the southern Japanese hemlock, was described as Abies tsugae.
The brains of the cell, the nucleus directs cell activities and contains genetic material called chromosomes made of DNA.
An organelle is a specialized part of the cell that serves a specific purpose within the cell. There are many organelles present within a cell and they also vary depending on what kind of cell we are talking about, whether it be a plant or animal cell. Here are a few of the organelles and their functions: 1  nucleus-this would be like the brain of the cell and gives direction to the rest of the cell. 2  cell membrane-this provides protection for the cell and allows material to enter and leave the cell. 3  vacuoles-these are used for storage of materials such as water.