Which of the following antibiotics does NOT target peptidoglycan synthesis?
a. bacitracin
b. penicillin
c. vancomycin
d. streptomycin
Answer: D
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Chromatin consists of ____
a. only DNA b. DNA and RNA c. RNA only d. DNA and associated proteins e. proteins only in the nucleus
In flowering plants
a. the gametophytes are smaller than the sporophytes and do not nourish themselves. b. the gametophytes are smaller than the sporophytes but are free-living and nourish themselves for most of their lives. c. the gametophytes are usually larger than the sporophytes, but both gametophytes and sporophytes nourish themselves. d. the gametophytes are usually larger than the sporophytes, and the sporophytes grow out of the gametophytes and are nourished by them. e. the gametophytes and sporophytes are roughly equal in size and each nourish themselves.
Which of the following statements is NOT true
concerning the results of Fred Griffith’s experiments? a. Mice injected with smooth (S) bacteria die. b. Mice injected with heat-killed, smooth bacteria die. c. Mice injected with heat-killed, smooth bacteria and live, rough (R) bacteria die. d. Mice injected with rough bacteria live. e. The rough bacteria received genetic material from the smooth bacteria.
The table shows the distribution of the number of bristles in a Drosophila population indicating how many individuals in the population have those particular number of bristles. Calculate the mean number of bristles in the entire population.
a. 4 b. 4.7 c. 13.27 d. 17.14 e. 18.5