All of the following are factors that affect disinfection and sterilization, except:

a. shape of the patho-gen. c. resistance of the pathogen.
b. number of organ-isms. d. strength of the ger-micide.

ANS: A
The shape of the organism does not make a difference in how disinfection and sterilization work. The number, location, and innate resistance of the microorganisms; the concentration and potency of the germicide; the duration of exposure; and the physical and chemical environment in which the germicide is used are all factors that affect disinfection and sterilization.