inside bacteria 0.0 / 5 ? Biologyinside bacteriaGCSEEdexcel Created by: laviniahann3Created on: 31-05-17 18:01 What is an electron microscope? It is a microscope that uses a beam of electrons to magnify specimens up to about 2000,000 times 1 of 7 How have electron microscopes been helpful to scientists? Electron microscopes also produce very clear images and have helped us to discover much more detailed structure of cells 2 of 7 What are the disadvantages of a light microscope? It shows that bacteria do not have a nuclei 3 of 7 What does the electron microscope show in a bacteria? It shows us that bacterial cells contain two types of DNA - chromosomal DNA and plasmid DNA 4 of 7 What is a chromosomal DNA? It is a giant loop of DNA containing most of the genetic material - it is not clearly packaged like plant or human chromosomes 5 of 7 What is a plasmid DNA? It comes in small loops and carries extra information 6 of 7 In bacteria, what is the flagella? Some bacteria have an flagellum on the outside of the cell - these are long, whip-like structures that bacteria can use to move themselves along 7 of 7
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