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Micro Exam 4
Dr. Lewis
29
Microbiology
Professional
04/11/2011

Additional Microbiology Flashcards

 


 

Cards

Term
Sterilization
Definition
removal or destruction of all forms of microbial life
Term
sterilant
Definition
sterilizing agent
Term
disinfection
Definition
destroying vegetative pathogens on inanimate objects
Term
disinfectant
Definition
agent used to treat inanimate objects for disingection
Term
antisepsis
Definition
destruction of vegetative pathogens on living tissue
Term
antiseptic
Definition
agent used on living tissue for microbial removal
Term
degerming
Definition
removal of microbes from limited area
Term
sanitization 
Definition
treatment to lower microbial count to safe public health standard
Term
How do you determine microbial death rate?
Definition
Microbial death rate
Term
What does TDP stand for?
Definition
Thermal death point- lowest temp killed in 10 mins
Term
What does TDT stand for?
Definition
Thermal Death Time- minimal time to kill at given temp
Term
Boiling
Definition
100 degrees celcius for 10 mins
Term
autoclaving
Definition
121 degrees celcius, 15 psi, 15 mins
Term
pasteurization 
Definition
72 degrees celcius, 15 secs
Term
Filtration
Definition
entrapment and separation of microbes from air/liquid 
Term
osmotic pressure
Definition
causes plasmolysis
Term
desiccation 
Definition
(drying) remove water from microbes
Term
What are the types of radiation?
Definition

Nonionizing (UV) Germicidal lamps
Ionizing (Xrays, gamma rays)

Term
Phenolics
Definition
Bisphenols (triclosan)- used in oral and antiseptic solutions
Term
Biquanides (cholorhexidine)- 
Definition
used as antispetic in soaps and lotions
Term
Halogens
Definition

Iodine (tincture)- skin antisepsis

Chlorine- water treatment

Term
Alcohols
Definition

skin antiseptic; instrument disinfectant

1. Ethyl alcohol

2. Isopropyl alcohol

Term
Heavy Metals
Definition

Silver nitrate- prevent gonococal ophthalmia neonatorum

Silver sulfadiazine- topical cream on burns

Copper sulfate- algicide

Term
Radiation
Definition
  • Non-ionizing (UV)
  • Ionizing (X rays, Gamma rays, high energy elctron beams)
Term

What are the Physical Methods of Microbial Control?

 

Hint: There are 6

Definition
  1. Heat
  2. Filtration
  3. Low Temperature
  4. Osmotic Pressure
  5. Dessication
  6. Radiation
Term
What are Quaternary Ammonium Compuonds?
Definition

antisetic/ preservative

  1. Zephiran (benzalkonium chloride)
  2. Cepacol (cetylpyridinium chloride)
Term
What are aldehydes?
Definition
Disinfection of medical equipment
Term
What is ethylene oxide gas
Definition
sterilization of instruments, equipment
Term
Peroxides
Definition
hydrogen peroxide-wound treatment
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