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.
After humans, the nature's relatively largest brain is that of the dolphin: 2 kg. A dolphin weighing 120 kg (280 pounds) has a 1.7 kg (4 pounds) brain; compared to its size, this is almost thrice than a chimp.
Brain Tour. 1. Three pounds, three parts. Your brain is your most powerful organ, yet weighs only about three pounds. It has a texture similar to firm jelly. It has three main parts: 1  The cerebrum fills up most of your skull. 2  The cerebellum sits at the back of your head, under the cerebrum. 3  The brain stem sits beneath your cerebrum in front of your cerebellum.