A pure culture contains
A. a variety of species from the same genus.
B. only one identified species of microorganism.
C. microbes from a single source.
D. only bacteria.
Answer: B
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This count of individuals refers to the __________
a. carrying capacity b. niche c. species diversity d. resource partitioning
ATP is best described as
A. an electron carrier. B. the energy molecule of cells. C. a double helix. D. an enzyme.
Four of the following characterize most prokaryotes. Which one is the exception?
a. lack of a nucleus b. a single circular chromosome c. cell wall
d. complex internal membranes e. great metabolic diversity
The significance of the Miller–Urey experiment is:
a. that conditions on Earth 4 billion years ago could produce RNA. b. that it is possible to produce LUCA in the laboratory. c. that conditions on Earth 4 billion years ago could produce amino acids. d. that it is possible to produce DNA under the same conditions as on Earth 4 billion years ago.