Which of the following are true about the amount of time required to kill microbes?
1. Time decreases as the strength of the germicide decreases.
2. Time is directly proportional to the number of pathogens.
3. Time increases as the microbial population increases.
4. Time varies with the resistance of the organism.
a. 2, 3, and 4 c. 1 and 3
b. 3 and 4 d. 2 and 3
ANS: A
The number of pathogens and their resistance affect the amount of time it takes to kill microbes. Increased strength of a germicide will decrease the amount of time to kill the microbes.
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