The nucleus is the biggest and most important organelle of the cell. The presence of the nucleus is the principal feature that distinguishes eukaryotic from prokaryotic cells Almost eukaryotic cells have the nucleus except mature red blood cells of mammals and sieve cells of high plants etc.. By housing the cell's genome, the nucleus serves both as the repository of genetic information and as the control
85. The general structure and function of the plasma membrane Introduction The membranes form continuous sheets that form the outer boundaries of the cells or enclose intercellular
once oncu n a paiuicuia positon on DNA, a nucleosome remained fixed in place because of the tight association 30-nm 98A5 sequence-specific DNA-binding proteins nucleosome
