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 human brain can be divided into three categories, namely, forebrain, midbrain and hindbrain. Both the cerebrum and cerebral cortex come under the forebrain. Cerebrum. Cerebrum is the largest and most prominent part of the human brain. It appears to envelop the rest of the brain as it constitutes 4/5 of its weight. It is split longitudinally into two large, prominent hemispheres; left and right by deep median fissure called âcerebral fissureâ.