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.
Brain Tour. The first stop on the virtual brain tour takes a look at the three main parts of the brain, the cerebral cortex, the cerebellum and the brain stem. It also explores the four brain lobes: the frontal lobe, the parietal lobe, the temporal lobe and the occipital lobe. The first part of the brain to evolve some 500 million years ago was the brain stem. It is also known as the reptilian brain or lower brain.