Which of the following is not a factor that affects germicidal activity?

A. Length of exposure
B. Microorganism being treated
C. Material being treated
D. Strength of the germicide
E. All of the choices are factors.


Answer: E

Biology & Microbiology

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The basilar membrane has varying flexibility. Activation of different regions of the basilar membrane enable perception of sounds of different:

A. pitch B. amplitude C. intensity D. loudness

Biology & Microbiology

A mutation is

A) a change in a DNA sequence that affects at least 90 percent of individuals in a population. B) a change in a DNA sequence that is rare in a population. C) a change in a DNA sequence that harms health. D) a type of radiation that can alter the genetic code.

Biology & Microbiology

The nutritive tissue in a mature pine seed is triploid

____________________ Indicate whether the statement is true or false.

Biology & Microbiology

Which of the following variables might be a proxy variable for the confounding factor of cognitive ability in a sample of workers and their ability to generate sales?

A. Age B. Tenure at the company C. Test scores D. Past sales records

Biology & Microbiology