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