Which of the following is a false statement concerning the Ames test?
A) The test is expensive.
B) The test does not use animals.
C) The test is relatively fast.
A) The test is expensive.
Feedback: The Ames test is inexpensive to run as compared to animal studies.
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The primitive template that was thought to be
used for forming chains that resemble proteins or nucleic acids was
a. meteorites that landed in the oceans. b. clay particles in tidal flats. c. sulfur that precipitated out of hydrothermal vents. d. rusty rocks. e. magma spewed from early volcanic activity
In the accompanying figure, which of the following represents a multicellular, haploid reproductive stage?
a. 1 b. 2 c. 3 d. 4 e. 5
How many codons are in the mRNA sequence GGAAUGAAACAGGAACCC?
A. 0 because mRNA has only anticodons B. 6 C. 27 D. 9 E. 3
Species richness is __________ when any one species enjoys a position of dominance
a. no different b. more dense c. reduced d. increased e. complex