What is vancomycin most often used to treat?
A. Clostridium difficile
B. methicillin-resistant Staphylococcus aureus
C. methicillin-resistant Staphylococcus aureus and Clostridium difficile
D. Streptococcus pyogenes
E. Escherichia coli
Answer: C
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The fruitfly cross shown here analyzes the transmission of two genes on the X chromosome. The male parent carries mutant alleles for both the white gene (w) and the crossveinless gene (cw). The female parent carries nonmutant forms of these genes
In the parental generation, the genotype of the female parent is _____________, and the genotype of the male parent is _____________. A. w-cv-/w-cv- ; w-cv-/Y B. w+cv+/w+cv+ ; w+cv-/Y C. w-cv-/w+cv+ ; w-cv+/Y D. w+cv+/w+cv+ ; w-cv-/Y E. w+cv+/w-cv- ; w-cv-/Y
In an experiment, the control group
a. is not subjected to experimental error. b. is exposed to experimental treatments. c. is identical to the one being tested except for the variable being studied. d. is treated exactly the same as the experimental group, except for the one independent variable. e. is statistically the most important part of the experiment
When the chromosomes line up at the equatorial plane, you can conclude the cell is in
A. anaphase. B. metaphase. C. interphase. D. telophase. E. prophase.
Tumor suppressor proteins?
A) produce growth factor signal cascades. B) remove growth factors from DNA. C) inactivate components of growth factor signal cascades. D) are produced by growth factors.