For the most part, all Enterobacteriaceae are positive for which biochemical reactions?
a. Glucose, oxidase, and catalase
b. Glucose, indole, and oxidase
c. Glucose, reduce nitrates to nitrites, and oxidase
d. Glucose, catalase, and reduce nitrates to nitrites
D
Enterobacteriaceae are facultative anaerobes that ferment glucose, are oxidase-negative, and, with rare exceptions, reduce nitrates to nitrites. Further, except for Shigella dysenteriae, type 1, all commonly isolated Enterobacteriaceae are catalase-positive.
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Which is true of MRSA strains?
A. They are all resistant to vancomycin. B. They carry the R plasmid. C. They may be susceptible to linezolid. D. The carry the R plasmid AND they may be susceptible to linezolid.
Which of the following is a way that protein function can be modified AFTER translation?
A) protein cleavage B) transcription regulation C) gene duplication D) exon shuffling E) gene rearrangement
The urinary bladder, identified as ____ in the
above diagram, is separated from the ____ by a sphincter.
a. A; ureter b. C; ureter c. A; urethra d. C; urethra e. none of these letters; urethra
In eukaryotic cells DNA has the appearance of a _____.
Fill in the blank(s) with the appropriate word(s).