Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

microbiology ch11

physical and chemical control of microbes

namemode of actionused wherepurposetraits
antisepsis - antiseptic destroys or inhibits vegetative pathogens human skin destroy or reduce microbes on human skin
antisepsis - degermination reduces numbers of microbes on skin by hard scrubbing, alcohol wipes, and germicidal soap. human skin destroy or reduce microbes on human skin
Phenolics disrupts cell walls, membranes, and precipitating proteins general disinfection of drains, cesspools, and animal quarters ex Lysol, creolin, aerosol sprays, soaps, kitty litter disinfection one or more aromatic carbon rings with added functional groups
alcohols dissolves membrane lipids, disrupts cell surface tension, and compromises membrane activity; denatures proteins in cytoplasm skin degerming agent, disinfect electrodes, face masks, thermometers disinfect or degerm colorless hydrocarbons with one or more OH- funtional groups
oxidizers 3% damages proteins and lipids skin wound cleansing, bedsore care mouthwashing, contact lens care, surgical utensils antiseptic hydrogen peroxide decomposes into water and oxygen, forming the free radical OH (toxic to cells)
oxidizers 35% damages proteins and lipids large objects -surgical tables, beds, etc sterilization hydrogen peroxide decomposes into water and oxygen, forming the free radical OH (toxic to cells)
surfectants (amphiphilic compounds) (quats) disrupts cell membrane hospitals, homes, industries Quats mixed with cleaning agents are used for disinfection and sterilization. Soaps are used as cleansers and sterilizers. (+) charged end binds with (-) surface proteins on the cell. long uncharged hydrocarbon chain allows detergent to disrupt membrane
sterilization destroys of removes all viable microorganisms (including viruses) using heat or a certain few chemicals inanimate objects such as surgical instruments, syringes, and commercially packaged foods used when it is important for all organisms to be dead
disinfection (physical and chemical processes) destroys vegetative pathogens (not endospores) as well as microbial toxins inanimate objects
decontamination any cleansing technique that mechanically removes microorganisms using a compound such as soap or detergent.; removes waste and physical debris cooking utensils, dishes, bottles, cans, clothing, and air to reduce contamination to safe levels
Created by: bellajerrent429