Sister chromatids are separated from each
other during ____ of meiosis.
a . telophase II
b. anaphase I
c. prophase II
d. anaphase II
e. metaphase II
D
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The sequence of the messenger RNA molecule (primary transcript) synthesized from a DNA molecule with a coding strand having the sequence 5' ATGCTACCGTTA is:
A. 5' UACGAUGGCAAU. B. 5' UAACGGUAGCAU. C. 5' AUGCUACCGUUA. D. 5' AUUGCCAUCGUA. E. None of the choices given is correct.
Conservation biology is a ______
a. mature science b. young science c. science that addresses speciation rates d. science practiced by environmentalists e. declining science
Cephalopods are the only mollusks that possess
a. a mantle. b. gills. c. a closed circulatory system. d. shells. e. a closed circulatory system and shells.
Figure 6.5B
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Questions 12-14 refer to the figure above illustrating the results from Engelmann's investigation.
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According to the figure, the most effective wavelength for photosynthesis is revealed by algae exposed to ____ nanometers.
A. 680 B. 700 C. 400 D. 425 E. 550