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.
Cell Organelle Information-You will need to know both the structure and function of the organelles in a cell. Make sure you know the difference in organelles found in plant and animal cells. Nucleus Back to the Top Function The nucleus is the control center of a cell as such it is the most important part of the cell. The control arises from the genetic information stored in the nucleus. Genes are made of the nucleic acid DNA.