The average amount of sleep needed changes over our lifetime, especially during childhood and adolescence. Although there are averages, there will be individuals who fall both above and below these needs, including the following groups of people: Infants (3-11 months) need 14-15 hours.
Transcript of things in real life that works like cells. The function of the nucleus is to maintain the integrity of these genes and to control the activities of the cell by regulating gene expression â the nucleus is, therefore, the control center of the cell.
CHROMOSOMES. A chromosome is a package containing a chunk of a genomeâthat is, it contains some of an organism's genes. The important word here is package: chromosomes help a cell to keep a large amount of genetic information neat, organized, and compact. Chromosomes are made of DNA and protein.