The bacterial genetic material is
A. held within a membrane-bound nucleus.
B. localized to a nucleoid region.
C. circular and loosely packed.
B. localized to a nucleoid region.
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Which of the following levels of ecological organization is arranged in the correct sequence from most to least inclusive?
A) community, ecosystem, organism, population B) ecosystem, community, population, organism C) population, ecosystem, organism, community D) organism, population, community, ecosystem E) organism, community, population, ecosystem
Sucrose is composed of:
A. two ketose sugars. B. a six-carbon sugar and a five-carbon sugar. C. a simple sugar and a nucleotide. D. an aldose and a ketose. E. glycerol and three fatty acids.
The theory of chromosomal inheritance was first proposed by
A. Knight. B. Stern. C. Mendel. D. Sutton. E. Morgan.
Amphibians are thought to have evolved from
A. spiny fish. B. lobe-finned fish. C. ray-finned fish. D. skates and rays. E. annelids.