Bacterial Cells

Bacterial Cells have:

• Chromosomal DNA: A long strand of DNA that is not in a neat order like chromosomes and holds most of the gentic material of the cell
• Plasmid DNA: Small loops of extra DNA, when some of this is lost for Genetic Engineering, no DNA is lost
• Cell Wall
• Flagellum: Whip-like protein bodies found on the outside of bacterial cells and other cells which beat backwards and forwards and can be used for movement

When the electron microscope was invented in the 1930s, we could magnify specemins by up to 2,000,000 times. They produce very clear images and have helped to produce a better understanding of the structure of cells. They have shown us that bacterial cells do not have a proper nucleus.