Prokaryotes were split into two domains based on differences in
a. staining characteristics.
b. metabolic capabilities.
c. rRNA sequences.
d. cell membrane properties.
e. cell wall composition.
C
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Which of the following is not a feature of a bacterial artificial chromosome (BAC) vector?
A. CEN sequences B. origin of replication (ori) C. par genes D. selectable antibiotic resistance gene E. cloning site within the ?-galactosidase gene
In addition to S. aureus, impetigo may also involve
A. M. luteus. B. S. pyogenes. C. S. epidermidis. D. Pseudomonas spp.
After three replications of a single DNA molecule, what percent of the resulting double helices contain
one strand of the "original" DNA? a. 0 percent b. 25 percent c. 50 percent d. 75 percent e. 100 percent
What is the maximum number of 100 amino acid long polypeptides that could be made?
A) 10020 B) 2000 C) 20100 D) 20101 E) 20