Hydrophobic molecules are __________ water
a. attracted to
b. absorbed by
c. repelled by
d. dissolved by
e. polarized by
Answer: c
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Select the correct sequence of steps as energy is extracted from glucose during cellular respiration.
A. glycolysis ? citric acid cycle ? acetyl CoA ? electron transport chain B. glycolysis ? acetyl CoA ? citric acid cycle ? electron transport chain C. acetyl CoA ? citric acid cycle ? electron transport chain ? glycolysis D. electron transport chain ? citric acid cycle ? glycolysis ? acetyl CoA E. citric acid cycle ? electron transport chain ? glycolysis ? acetyl CoA
The North American bison was hunted to near extinction in the 1800s, and has since recovered, but with decreased genetic diversity. This is an example of
A. gene flow. B. increased mutation rate. C. a bottleneck effect. D. natural selection. E. a founder effect.
Adherens junctions and desmosomes may be distinguished from each other on the basis of
a. the presence of cadherins versus ICAMs. b. the linkage of cadherins either to actin filaments or to intermediate filaments, respectively. c. whether the cadherins are linked directly or indirectly to the cytoskeletal elements. d. whether the linkage is between two cells or between a cell and the extracellular environment.
Figure 23.12
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The accompanying figure illustrates the life cycle of a(n) ____.
A. zygomycete B. ascomycete C. basidiomycete D. glomeromycete E. lichen