... serious disease that shows the importance of controls on cell growth. Eukaryote cells divide in order to slow down cell growth. Cell division is the process in which a cell divides to form two daughter cells. The first stage of cell division is called mitosis. Mitosis is the process when the nucleus of a cell is divided into two nuclei, and both have the same number ... materials happens furthermore preparing the cell for division. While interphase is taking place the nucleus is busy in synthesizing messenger RNA to direct all the steps. The first phase in mitosis is called prophase. Pr...

• Word Count: 4152
• Approx Pages: 17
• Grade Level: High School

... and freshwater protists. Subclass Pelobiontae includes one genus, Pelomyxa, large cells which lack almost every characteristic of eukaryotic cells except the existence of a membrane-bound nucleus; these cells' nuclei divide like bacterial nucleoids. Members of the Mastigamoeba subclass are unicellular, asexual heterotrophs that may be either parasitic or free-living. Class Metamonada consists of unicellular organisms ... cilia have the same ultrastructure but are modified to perform various functions. There are two types of ciliate nuclei, but only the micronuclei divide by mitosis. The ...

• Word Count: 3806
• Approx Pages: 15
• Grade Level: Undergraduate

... , as the name suggests, the triplication of the 21st chromosome. Genes which, basically, contain the blueprints for our cellular structure, are grouped along rod-like structures called chromosomes. Normally, the nucleus of each cell contains 23 pairs of chromosomes, half of which are inherited from each parent. In Down syndrome (DS), however, the cells usually contain not 46, but 47 chromosomes ... gene (alleles) may be present. (Example: the genetic information for eye color is a "gene;" the variations for blue, green, etc. are the alleles.) Human cells divide in two ways, the first bei...

• Word Count: 3980
• Approx Pages: 16
• Has Bibliography
• Grade Level: Undergraduate