Which of the following staphylococcal virulence factors produce the signs and symptoms of scalded skin syndrome?
A) hyaluronidase
B) staphylokinase
C) exfoliative toxin
D) leukocidin
E) coagulase
C
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Quality control should be performed on which two organisms to determine the validity of the oxidase reagent?
a. S. aureus and S. epidermidis b. S. epidermidis and Enterococcus c. Aerococcus and Enterococcus d. Micrococcus and Aerococcus
What is/are the function(s) of a coactivator?
a. form a bridge between the enhancer and the promoter proximal region b. cause the DNA to form a loop c. bind to RNA polymerase d. increase the rate of transcription e. all of these
The genetic code depicts the relationship between a codon and its corresponding _______.
a. protein b. tRNA c. mRNA d. amino acid
All angiosperms have
A. animal pollinators. B. scented flowers. C. fleshy fruits for dispersal. D. nectaries. E. ovules enclosed in carpels.