Micro I Exam 3

  1. a very common disinfectant, is more potent and less irritating then formaldehyde in certain situations, after several hours of exposure it will kill bacteria cells, and therefore referred to as a Cold or Liquid Sterilization
  2. are surface tension reducers, good coagulating agents, and are a good solvent of lipids
  3. chemicals that react with amino and hydroxyl groups in organic compounds
  4. the condition in which there is no pathogenic organisms living or reproducing on living tissue
  5. agents that destroy bacteria
  6. a good method of disinfection because it will kill most vegetative cells but cannot be considered sterilization because spores can survive hours of boiling
  7. pure phenol is no longer used due to its toxicity
    Carbolic Acid/Phenol
  8. provides a bacteriostatic state only, does not kill bacteria
    Cold Sterilization
  9. disinfection completed during the embalming procedure
    Concurrent Disinfection
  10. structurally are simply phenol with a methyl group attached, example-lysol
  11. to inhibit or destroy all pathogenic organisms, only meant to remove or retard the growth of disease causing organisms
  12. formed from using a hot air oven, the heat causes oxidation of the cellular proteins, takes longer than when moisture is present with the heat, and can only be used on items that can withstand high heat for 1 to 3 hours without burning
    Dry Heat
  13. the removal of microorganisms from liquids by passing it through a filter, the filter must have pore smaller than the average diameter of bacteria, and this is often using on liquids that would be harmed by heat
  14. formaldehyde gas in water form, also works well as a preservative compound, because it is a
    chelator, a chelator will firm and set the proteins well
  15. Tyndallization
    Fractional Sterilization
  16. the process of spraying chemical vapors into the air to kill insects and/or vermin that carry pathogenic organisms
  17. destroy fungi
  18. a non-specific term that literally means to kill germs; refer to agents that are destructive to germs and microorganisms
  19. chlorine, bromine, and fluorine; this entire family of elements can be used as disinfectants because they have strong oxidizing properties; two most commonly used are chlorine and iodine
  20. one of the best methods for contolling the growth of microorganisms; can be used in
    several different forms; end results and time needed depends on the organisms present and the form of heat used
  21. was once a very commonly used disinfectant in deodorants, soaps and skin-cleansing
    products but has been banned by the FDA; now available only at prescription strength for treatment of acne and as a skin degerming agent
  22. (bleaches) sodium hypochlorite specifically is a very effective when diluted in a one to ten solution; it works by oxidizing the cellular enzymes and proteins
  23. burning, destroys the object being treated as well as the organisms, this is used to control microorganisms in trash, and also used on inoculating loops or wires in a microbiology lab
  24. agents that will destroy insects
  25. these are organic compounds of iodine, will
    readily combine with amino acids causing a change in the proteins of the cell, active against bacteria spores
  26. better than dry heat because the heat penetrates the object faster in the presence of
    Moist Heat
  27. a disinfection process rather than sterilization, used for liquids that cannot be exposed to high temperatures; the liquid is heated then subjected to a rapid cooling process
  28. What are chemicals used to create a state of disinfection called?
  29. What chemical agents are used to destroy pathogenic organisms?
  30. What are agents that prevent the growth and reproduction of bacteria called (2)?
    • antiseptic agents
    • bacteriostatic agents
  31. What chemicals are best used on living tissue?
    • antiseptic agents
    • bacteriostatic agents
  32. What method of controlling microorganisms is often used on liquids that could be harmed by exposure to heat?
  33. What is the most often used method of controlling microorganisms in rubbish or trash?
  34. How does dry heat sterilization kill microorganisms?
    causes oxidation of cellular proteins
  35. Why is moist heat better than dry heat for disinfection?
    heat penetrates objects at a faster rate
  36. Why is boiling not completely effective as a sterilant?
    spores can survive boiling
  37. Phemerol
  38. the effectiveness of other disinfectants is measured in comparison to phenol
    Phenol Coefficient
  39. these compounds work by disrupting the cell membrane causing bacterial lysis
    Phenolic Compounds
  40. disinfection that is performed before embalming
    Primary Disinfection
  41. derivatives of amine compounds used as a skin antiseptic or as an instrument and surface disinfectant; ineffective against fungi, viruses and bacterial spores; considered to be bacteriostatic
    Quaternary Ammonium Compound
  42. the use of wetted device to rub the surface of an object clean; often includes surfactants, such as soap or detergent, or disinfectant chemicals
  43. in a liquid, the gradual setting of particles containing bacteria to the bottom of the container, the cleaner liquid is removed from the top of the container
  44. works like a pressure cooker used for canning purposes; most effective form of sterilization; and works better because pressurized steam is hotter than live steam or boiling water
    Steam Under Pressure
  45. the act or process of making something sterile; the killing or removal of all forms of life; this must include the destruction of bacterial spores
  46. disinfection completed after the embalming procedure
    Terminal Disinfection
  47. is NOT technically a form of sterilization because there is no assurance that bacterial spores are destroyed; qualifies as a disinfection; it entails 30 minutes of, for 3 days, with an incubation period occurring between steam treatments
    • Tyndalization
    • Fractional Sterilization
    • Intermittent Sterilization
  48. acts by causing mutations in the DNA of a bacterial cell; shows up at the next cell
    Ultra Violet Sterilization
  49. agents that destroy viruses
Card Set
Micro I Exam 3
Micro I Exam 3