Florida Cosmetology Licensing ExamSafety, Sanitation, and SterilizationEasy
Which of the following statements accurately describes the primary difference between disinfection and sterilization?
- ADisinfection kills all microbial life, while sterilization only kills bacteria.
- BSterilization destroys all microbial life, including spores, while disinfection significantly reduces pathogens but does not kill all spores.
- CSterilization uses chemicals, while disinfection uses heat.
- DDisinfection is for porous items, and sterilization is for non-porous items.
Show answer & explanationAnswer & explanation
Correct answer: B. Sterilization destroys all microbial life, including spores, while disinfection significantly reduces pathogens but does not kill all spores.
Sterilization is the highest level of decontamination, destroying all microbial life, including highly resistant bacterial spores. Disinfection, while effective in killing most harmful pathogens, does not typically eliminate all bacterial spores.
Why the other options are wrong
- A. This statement incorrectly reverses the definitions; sterilization kills all microbial life.
- C. This is incorrect; both can use chemicals or heat, but it's the level of microbial destruction that differentiates them.
- D. This is incorrect; both methods can apply to non-porous items, and porous items are typically single-use and disposed of.
Disinfection vs. Sterilization
Sterilization destroys ALL microbial life (including spores), while disinfection significantly reduces pathogens but may not kill all spores.
- Sterilization = total destruction.
- Disinfection = pathogen reduction.
- Spores are a key differentiator.
- Sterilization is higher level of safety.
Memory trick: Sterile is zero, disinfectant just lessens.