Which of the following statements is TRUE of selective toxicity?
A) Selective toxicity takes advantage of structural differences between host and pathogen.
B) To be effective, an antimicrobial agent must be more toxic to the patient than the pathogen.
C) Selective toxicity takes advantage of metabolic differences between host and pathogen.
D) Antimicrobial agents must target structural differences between host and pathogen and be more toxic to the patient than the pathogen.
E) Selective toxicity takes advantage of structural and/or metabolic differences between host and pathogen.
E
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The term that refers to those microbes found as symbionts in a short relationship of a nongrowing nature is ________.
Fill in the blank(s) with the appropriate word(s).
Geological processes in the nutrient cycle operate ____
a. quickly b. slowly c. on living material d. only on organic matter e. on solar energy
Genetic variation is accomplished by all but one of the following. Choose the exception
A) the events of meiosis I B) crossing over C) independent assortment D) the events of meiosis II
The number of protons in the nucleus of an atom is called the ________.
Fill in the blank(s) with the appropriate word(s).