Classes of Microorganisms 2.02 Understand infection control procedures

Classes of Microorganisms Non-pathogenic normal do not produce disease beneficial Pathogenic cause infection and disease May be non-pathogenic in one body system, pathogenic in another (E. coli) 2.02 Understand infection control procedures

Classes of Microorganisms Aerobic requires oxygen to live Anaerobic does not require oxygen to live 2.02 Understand infection control procedures

Classes of Microorganisms Bacteria Protozoa Fungi Rickettsiae Viruses Helminths 2.02 Understand infection control procedures

Classes of Microorganisms Bacteria Often considered the causes of disease Certain bacteria produce antibiotics live in the body without problems live on the roots of certain plants, converting nitrogen into a usable form help break down dead organic matter Classified by shape and arrangement Treated with antibiotics 2.02 Understand infection control procedures

Classes of Microorganisms Bacteria Cocci- round in shape diplococci streptococci staphylococci Streptococci Staphylococcal clusters 2.02 Understand infection control procedures

Classes of Microorganisms Bacteria Bacilli rod shape single pairs chains may have flagella may form spores difficult to treat 2.02 Understand infection control procedures

Classes of Microorganisms Bacteria Spirilla spiral or corkscrew shape vibrio - spirochete Treponema pallidum Cholera 2.02 Understand infection control procedures

Classes of Microorganisms Bacteria Some bacteria develop resistance to antibiotics Very difficult to cure Methicillin-resistant Staphylococcus (MRSA) Multidrug-resistant Staphylococcus (MDSA) 2.02 Understand infection control procedures

Classes of Microorganisms Protozoa One celled, animal-like organism Contain a nucleus and other defined organelles 2.02 Understand infection control procedures

Classes of Microorganisms Fungi organisms that usually enjoy a symbiotic, but sometimes parasitic relationship with their host provide numerous drugs and foods provide bubbles in bread, champagne, and beer cause a number of plant and animal diseases fungal diseases are very difficult to treat 2.02 Understand infection control procedures

Classes of Microorganisms Fungi 2.02 Understand infection control procedures

Classes of Microorganisms Rickettsiae rod-shaped, parasitic bacteria live in the tissues of ticks, fleas, and lice transmitted to humans through bites invade the new host from within 2.02 Understand infection control procedures

Classes of Microorganisms Viruses small, infectious agent requires a host for survival over 5,000 types can combine in multiple ways to produce a wide range of diseases produce immune response in humans treated with antiviral drugs 2.02 Understand infection control procedures

Classes of Microorganisms Helminths Parasitic worm-like organisms Live inside the host Feed off their host Disrupt nutrient absorption Lead to weakness Excrete toxins making host susceptible to other diseases Approximately 30 billion people globally are infected 2.02 Understand infection control procedures

Classes of Microorganisms Bacteria Protozoa Fungi Rickettsiae Viruses Helminths 2.02 Understand infection control procedures