Whats the difference between an electron microscope and a light microscope?
(Electron microscopes magnify way beyond what our light microscopes do. They magnify images up to a million times their actual size, and they use electrons instead of visible light to get magnified images.) • In the video, why was Dr. X so concerned about what happened at the Barkley house? (The cutting board that Mr. Barkley used to prepare the raw poultry was not properly cleaned before Alex used it to cut up raw vegetables for the salad. Dr. X was concerned that the raw juices from the poultry could have contaminated the raw vegetables.) • How do you know the agar and swabs used to collect samples were free from microorganisms? (Make a control plate.) • If the agar or swabs were not free from microorganisms, explain how this would affect your results? (Results could be misleading because of contamination.) • What do the data you’ve collected have to do with the food you eat? (Bacteria are everywhere and can be transferred from surfaces to food and from hands to food.) • Why do certa
