Matching Pairs Principles of InfectionOnline version Put into practice what you have learned about infection principles. by Rosalind Carter 1 Bacteria 2 Scabies 3 Toxins 4 Fungi 5 Parasites 6 Head lice 7 Germs 8 Viruses 9 Common cold 10 Mildew 11 Biofilm Organisms that cannot live on their own Plant parasites that can cause contagious diseases Poisonous substances produced by some bacteria and viruses Contagious disease caused by the itch mite Can be pathogenic or nonpathogenic Nonscientific synonym for disease-producing organisms Submicroscopic particle that infects the cells of an organism An example of a virus An example of a parasite An example of a fungus Colonies of microorganisms that adhere to environmental surfaces, as well as the human body, and secrete a sticky, protective coating that cements them together.