The cell nucleus contains the majority of the cell's genetic material in the form of multiple linear DNA molecules organized into structures called chromosomes.Each human cell contains roughly two meters of DNA.he cell nucleus contains the majority of the cell's genetic material in the form of multiple linear DNA molecules organized into structures called chromosomes.
Mammals are the champions. 1. The largest brain belongs to the sperm whale: 7 kg (17.5 pounds). The blue whale, the largest animal on the planet, being twice longer and thrice heavier, has a brain weighing 5 kg (12.5 pounds). 2. Human brain has an average weight of 2.7 pounds (1.2 kg), variations between 1.1 and 1.4 kg being considered normal.
The adult human brain is about 2% of the total body weight. The elephant brain weighs about 6,000 g. The cat brain weighs about 30 g. The average human brain is 140 mm wide.