Biology, 10.12.2019 19:31 catboy7196
In the ames test, the appearance of his+ revertants in the presence of a non-mutagenic control compound indicates that
a. there is some low-level contamination in most experiments
b. the growth medium contains factors that are mildly mutagenic
c. some of the reversion mutations are not caused by the mutagen being tested
d. liver extract increases the potency of some mutagens
Answers: 3
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Astudent observes a star from two positions of earth in its orbit, in summer and winter, and measures the change in the position of the star. which of these can be best calculated by this method?
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What makes the results of a scientific experiment accurate? a) having multiple trials b) lacking any supporting data c) working in a lab d) using a hypothesis that is always true
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When coal has reached it hardest, darkest form, it is called select one: 0 a. sub-bituminous b. lignite c. bituminous d. antrhacite next page
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Compare the composition of the moon's surface with the composition of the earth's surface.
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In the ames test, the appearance of his+ revertants in the presence of a non-mutagenic control compo...
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