UV light has ______ wavelengths than visible light waves, and its peak energy is at a wavelength of ______.
Shorter; 254nm
Which of the following would be appropriately sterilized using UV radiation
Stainless steel surface in biological safety cabinet used for media preparation
Which of the following DNA sequences would be the most likely to be damaged by UV radiation?
CTTGAATTA
Which of the following infectious agents is least likely to be damaged by UV exposure?
prions
which structures are less susceptible to uv damage
Endospores
When two adjacent thymine molecules are joined by a covalent bond as a result of exposure to UV light, this structure is referred to as a
thyme dimer
Which of the following are limitations of using UV radiation for disinfection?
UV radiation does not penetrate through paper, plastic, or liquids
UV radiation destroys bacteria but not viruses
UV radiation can damage the skin and eyes
How is an antiseptic different from a disinfectant
An antiseptic is used to remove or kill microorganisms on tissue, whereas a disinfectant is used to remove or kill microorganisms on inanimate objects.
How is an antiseptic different from a disinfectant
An antiseptic is used to remove or kill microorganisms on tissue, whereas a disinfectant is used to remove or kill microorganisms on inanimate objects.
Betadine, an iodine compound used to scrub skin before a surgical incision, is considered a(n)
Antiseptic
The chemical that you use to wipe down your lab bench at the beginning and end of a lab exercise is an example of a(n
disinfectant
What will be the variable in the four quadrants of the plate?
Type of antiseptic
What is the purpose of water in the experiment?
A negative control