Members of the phylum Thermotogae can be found growing in
A. the intestinal tract of mammals.
B. soils of the Antarctic.
C. marine salterns of the shore of the Dead Sea.
D. marine hydrothermal vents and terrestrial solfataric hot springs.
Answer: D
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One source of trait variations among individuals is the process of fertilization, in which when new combinations of maternal and paternal alleles are produced. What other sources contribute to trait variations within a species?
What will be an ideal response?
Which evolutionary adaptation is found in a typical desert plant?
A) shallow roots to quickly capture water B) broad leaves to capture the bright sunlight C) long-blooming flowers to attract pollinators D) deep roots to capture all available moisture
Which equation best describes the relationship between an ion gradient and the equilibrium potential that will form when the membrane is permeable to only that ion?
A) Huxley equation B) Goldman equation C) Nernst equation D) Hodgkin equation E) Katz equation
Structures that have no apparent function but had a function in ancestral species are
A. the fossil record. B. vestigial structures. C. development. D. the molecular record. E. homology.