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.
The brain of the men is, on average, 100 grams (0.3 pounds) heavier than that of the women. 4. The largest brain of a terrestrial animal is that of the elephant: 10.5 pounds (4.78 kg). Still, the brain of the elephant makes less than 0.1% of its body weight.
The largest and most obvious parts of the human brain are the cerebral hemispheres. The cerebrum has an outer layer - the cortex, which is composed of neurons and their supporting cells, and in living brain, has a gray color thus called the gray matter.