0
UV light at germicidal wavelengths causes adjacent thymine molecules on DNA to dimerize; if enough of these defects accumulate on a microorganism's DNA its replication is inhibited, thereby rendering it harmless (even though the organism may not be killed outright). However, since microorganisms can be shielded from ultraviolet light in small cracks and other shaded areas, these lamps are used only as a supplement to other sterilization techniques.
Charlie Schulist
Add your answer:
Earn +20 pts
Does UV light kill viruses?
UV rays (Ultra violent rays) kills plants and humans.
Does uv light kill listeria?
yes uv light does kill listeria and does not hurt the food
Which part of the em spectrum can be used to kill bacteria?
Ultraviolet (UV) radiation, specifically UVC light, can be used to kill bacteria. UVC light has a short wavelength and high energy, which damages the DNA and RNA of bacteria, preventing their growth and reproduction. This property makes UVC light an effective tool for disinfection purposes.
What kind of drugs can kill bacteria?
The types of drugs that can kill bacteria are called 'antibiotics'.
What can bacteria do that viruses cannot?
Bacteria can attack and kill cells. White blood cells can kill bacteria.
Does UV light kill bacteria?
yes, it does it burns it until it goes away.
Does uv rays affect food?
No. Uv (ultraviolet radiation) rays are used on food to kill unwanted bacteria withoud harmful chemicals.
Does UV light kill viruses?
UV rays (Ultra violent rays) kills plants and humans.
What bacteria does 254 nm and 185 nm uv kill?
bacteria and viruses and microorganisms. I think 185nm kills some organic stuff.
What types of contaminants does a UV air purifier help to remove from the air?
UV lights or cleaners use UV radiation from UV lamps and eliminate pollutants such as molds, bacteria, and viruses that are in the air or are growing on surfaces within the house. The stronger the lamp, the stronger the effectiveness.
What are five things that kill bacteria outside body?
Heat, UV Radiation, Vinegar, Bleach, Lysol.
Do light wands kill lice?
A UV light wand can kill lice. It can also kill the eggs of dust mites, fleas, and lice. The wand can kill 99 percent of bacteria and viruses.
What are UV and RO water filters?
UV is not a filter as such, it is a cylinder with a special light to kill bacteria. RO is a Reverse Osmosis unit which usually has 4 filters and a membrane which traps extremely tiny particles.
What is UV radiation sterilization?
UV radiation is used to destroy bacteria, thereby sterilizing a surface on which bacteria were manipulated by a scientist.
Does changing the color of a UV light change its ability to kill bacteria?
If you changed the color, it wouldn't be Ultra Violet anymore, now would it?
What are two helpful effects of UV light?
Ultraviolet light produced by Ultraviolet lamps is used to kill bacteria on food and surgical tools.
Does uv light kill listeria?
yes uv light does kill listeria and does not hurt the food
