1 / 21

Classes of Microorganisms

Viruses. Pathogenic. Aerobic. Classes of Microorganisms. Bacteria. Rickettsiae. Protozoa. Fungi. Non-pathogenic. Anaerobic. Helminths. Remember. What may be non-pathogenic in one body system could be pathogenic in another Example: E. coli. Classes of Microorganisms.

samara
Télécharger la présentation

Classes of Microorganisms

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Viruses Pathogenic Aerobic Classes of Microorganisms • Bacteria • Rickettsiae • Protozoa • Fungi Non-pathogenic Anaerobic • Helminths 2.02 Understand infection control procedures

  2. Remember What may be non-pathogenic in one body system could be pathogenic in another Example: E. coli 2.02 Understand infection control procedures

  3. Classes of Microorganisms • Non-pathogenic • normal • do not produce disease • beneficial • Pathogenic • cause infection and disease 2.02 Understand infection control procedures

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

  5. 6 Classes of Microorganisms • Bacteria Protozoa • Fungi Rickettsiae • Viruses Helminths 2.02 Understand infection control procedures

  6. Bacteria • Often considered the causes of disease • Classified by shape and arrangement • Treated with antibiotics 2.02 Understand infection control procedures

  7. 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 2.02 Understand infection control procedures

  8. Bacteria Cocci Bacilli Spirilla

  9. Bacteria Cocci- • round in shape • diplococci • streptococci • staphylococci Streptococci Staphylococcal clusters 2.02 Understand infection control procedures

  10. Bacteria Bacilli • rod shape • single • pairs • chains • may have flagella -aids in movement • may form spores • difficult to treat 2.02 Understand infection control procedures

  11. Bacteria Spirilla • spiral or corkscrew shape • vibrio - spirochete Cholera Treponema pallidum 2.02 Understand infection control procedures

  12. Bacteria • Some develop resistance to antibiotics • Very difficult to cure • Methicillin-resistant Staphylococcus (MRSA) • Multidrug-resistant Staphylococcus (MDSA) 2.02 Understand infection control procedures

  13. Protozoa • One celled, animal-like organism • Contain a nucleus and other defined organelles • Example: Malaria, amebic dysentery • Malaria invades RBC and causes them to rupture 2.02 Understand infection control procedures

  14. Fungi • enjoys 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

  15. Classes of Microorganisms • Fungi 2.02 Understand infection control procedures

  16. 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 • Rocky Mountain Spotted Fever 2.02 Understand infection control procedures

  17. Viruses • small infectious agent • requires a host for survival • Seen with electron microscope • over 5,000 types • can combine in multiple ways to produce a wide range of diseases 2.02 Understand infection control procedures

  18. Viruses • produce immune response in humans • treated with antiviral drugs • Common cold, measles, mumps, chicken pox, AIDS 2.02 Understand infection control procedures

  19. Helminths • Parasitic worm-like organisms • Live inside the host • Feed off their host • Disrupt nutrient absorption 2.02 Understand infection control procedures

  20. Helminths • Lead to weakness • Excrete toxins making host susceptible to other diseases • Approximately 30 billion people globally are infected 2.02 Understand infection control procedures

  21. Classes of Microorganisms Any Questions? 2.02 Understand infection control procedures

More Related