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.
2. The main function of the cytoplasm is to hold the cell organelles of the cell. Cell organelles are basically components of the cell which control all the activities of the cell. For example, mitochondria are cell organelles which control almost all of the cell's metabolic activities.. The main function of the cytoplasm is to hold the cell organelles of the cell. Cell organelles are basically components of the cell which control all the activities of the cell. For example, mitochondria are cell organelles which control almost all of the cell's metabolic activities.