Which of the following is not an element standardized in susceptibility testing?

A) cation concentration
B) bacterial inoculum size
C) pH
D) patient specimen source


Ans: D) patient specimen source

Biology & Microbiology

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Most drug-resistant bacteria isolated from patients contain a(n)

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One hallmark of speciation is ____

a. lack of change in reproductive behaviors b. a decrease in balanced polymorphisms c. an increase in fixed alleles d. decreased genetic diversity of populations

e. end of gene flow between populations

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High levels of cortisol can mimic the effects of _____ on the _____

a. insulin; liver b. TSH; thyroid c. insulin; muscles d. glucagon; liver e. glucagon; cells

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Four of the five answers listed below are terms describing haploid cells. Select the exception

a. ovum b. primary spermatocyte c. spermatid d. polar body e. secondary spermatocyte

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