Question

1. the decimal reduction time refers to the amount of time it takes to which of the following

a. reduce a microbial population by 10%
b. reduce a microbial population by 0.1%
c. reduce a microbial population by 90%
d. completely eliminate a microbial population

1. which of the following microbial control methods does not actually kill microbes or inhibit their growth but instead removes them physically from samples?

a. filtration
b. desiccation
c. lyophilization
d. nonionizing radiation

1. which of the following refers to a disinfecting chemical dissolved in alcohol?

a. iodophor
b. tincture
c. phenolic
d. peroxygen

Explanation:

• For question 4: The decimal - reduction time is the time required to reduce a microbial population by 90%.
• For question 5: Filtration physically removes microbes from samples without killing or inhibiting their growth.
• For question 6: A tincture is a disinfecting chemical dissolved in alcohol.

Answer:

1. C. reduce a microbial population by 90%
2. A. filtration
3. B. tincture