Dialysis Technician Practice Exam

What is U.V. light and what does it do?

1. Avisible light that aids in treatment

2. Invisible radiation that destroys microorganisms

3. Visible radiation that promotes healing

4. A type of light that causes discomfort

The correct answer is: Invisible radiation that destroys microorganisms

U.V. light, or ultraviolet light, is a form of invisible radiation that is effective in destroying various microorganisms such as bacteria, viruses, and fungi. This property makes it particularly useful in medical and laboratory settings for sterilization and disinfection purposes. By incorporating U.V. light into processes requiring sanitation, healthcare facilities can significantly reduce the risk of infections and enhance the safety of the environment. The other choices do not accurately describe U.V. light. Visible light, for instance, does not possess the same microbial destruction capabilities as U.V. light, and while it can assist in some treatments, it doesn't have the same application in sterilization. Additionally, while visible radiation can promote healing in specific contexts, such as through phototherapy, it does not specifically refer to the function of U.V. light. Lastly, while certain types of light can cause discomfort when exposed to intense levels, U.V. light's primary significance lies in its germicidal properties rather than discomfort alone.