The control center of a cell is the nucleus , which contains the chromosomes of the cell. DNA is the genetic material in the cell, and is found in the nucleus in the chromosomes . The mitochondria are known as the powerhouse of the cell because they generate energy.
Cellular respiration occurs in the mitochondria.
A semi-permeable plasma membrane controls what goes in and out of the cell. Ribosomes are located on the endoplasmic reticulum and are the site of protein synthesis in the cell. The endoplasmic reticulum transports materials from place to place within the cell and provides a place for the ribosomes to attach. Plant cells have a cell wall , but animal cells do not. Outside the nucleus is a gel-like fluid that contains the cellular organelles.