Which method is used in DNA sequencing to “visualize” nucleotides?
a. fluorescence
b. electron microscopy
c. radioactivity
d. viral resistance
e. drug resistance
ANSWER: a
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What are the short retinal photoreceptors responsible for color vision called?
A. rods B. cones C. bipolar cells D. glial cells E. ganglion cells
Which of the following components are part of
an ecosystem?
a. plants b. animals c. rocks and soils d. plants and animals e. plants, animals, rocks, and soil
Which of the following would be an example of natural selection?
A. Mutations change the gene frequency of a population. B. All of the plants on an island are killed by a volcanic eruption. C. In a forest, the taller oak trees produce twice as many acorns as shorter ones. D. Mice that were painted with a white stripe by biologists were eaten by predators more often than those that were not painted.
What major adaptations contributed to the success of the angiosperms?
A) Broad leaves B) Flowers and fruits C) Sap containing "antifreeze" D) A and B E) A and C