The concentrations in a broth dilution test that separate the categories of susceptible, intermediate, and resistant are called:
a. border concentrations.
b. tolerance limits.
c. breakpoints.
d. reference values.
C
Breakpoints is the term given to the concentrations in a broth dilution test that fall in between the categories of susceptible, intermediate, and resistant.
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Which of the following does accurately describe the Lineweaver—Burk plot?
A) It is a double-reciprocal plot. B) The y intercept is equal to 1/Vmax. C) The x intercept is -1/Km. D) It is a linear plot. E) Its slope is the same as the Eadie—Hofstee plot.
Polyploidy can result when
A) a translocation occurs between two chromosomes. B) one pair of homologous chromosomes does not separate during meiosis. C) a developing gamete is haploid. D) a haploid sperm fertilizes a diploid egg.
Which of the following branches of biology examines the form and variety of organisms in their
natural environment?
a. Taxonomy b. Natural history c. Comparative morphology
d. Biogeography e. Geology
An inflammatory condition of the respiratory system that results in intermittent wheezing and excess mucus production is called:
A) sinusitis. B) asthma. C) bronchitis. D) emphysema.