Which drug exerts its effect by weakening the cell wall until the bacterial cell is lysed?
A. Linezolid
B. Vancomycin
C. Bacitracin
D. Rifampin
B. Vancomycin
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The very first level of packaging eukaryotic DNA is the:
A. 30-nm chromatin fiber. B. nucleosome. C. beads on a string. D. both the 30-nm chromatin fiber and beads on a string. E. None of the answer options is correct.
Which of the following observations did not influence Darwin's later thoughts about evolution?
a. The discovery of fossils that resembled extant organisms in the same region. b. The observation that animals from similar habitats in South America and Europe were very different. c. A great variety of species exist across the globe. d. Species on islands differed from species on the mainland closest to the island. e. North American and South American species were more similar to each other than European and African species.
__________ behavior is altered by experience.
Fill in the blank(s) with the appropriate word(s).
For measuring water quality, which of the following LTB tubes should be subcultured?
A) Tubes that exhibit gas production B) Tubes that do not exhibit gas production