When identifying a therapeutic dose, which concentration of an antibiotic is usually sought for treatment?
A) The highest concentration the patient can tolerant, because it will work quicker.
B) The lowest effective concentration, because antimicrobics can be toxic.
B) The lowest effective concentration, because antimicrobics can be toxic.
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What kind of mutation has no effect on an organism's ability to survive or reproduce?
A. a deleterious mutation B. a neutral mutation C. an advantageous mutation D. an adapted mutation
If a cell contains 84 sister chromatids at metaphase of mitosis, how many chromosomes will be present in each
nucleus in late telophase?
a. 168 b. 84 c. 42 d. 21 e. cannot be determined from the information given
The toxic superoxide ion is converted to harmless oxygen by two enzymes,
A. catalase and hydrogen peroxidase. B. superoxide dismutase and catalase. C. superoxide dismutase and hydrogen peroxidase. D. catalase and oxidase. E. superoxide dismutase and oxidase.
Four of the five answers below are limits to achieving a population's full biotic potential. Select the
exception. a. lack of nutrients b. predation c. exponential growth d. competition for space e. waste buildup