What do plants produce that supports the higher trophic levels of the community?
a. energy-containing food molecules
b. energy
c. oxygen
d. carbon dioxide
Answer: a. energy-containing food molecules
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The nucleic acids carried by viruses usually consist of
A. DNA. B. RNA. C. either DNA or RNA. D. both DNA and RNA simultaneously.
The genus Arthrobacter has a distinctive growth cycle in which branched rod-shaped bacteria are produced in the exponential phase, and cocci are found in stationary phase cultures.
Answer the following statement true (T) or false (F)
In Barrow, Alaska, the sun does not set for several months in the summer. Based on what you know about photoperiodism, what type of plant is most likely to flower during the summer in Barrow?
A. Long-day plants. B. Short-day plants. C. Day-neutral plants.
Biological diversity is composed of what three levels?
A. trophic diversity, ecosystem diversity, and species diversity. B. ecosystem diversity, species diversity, and process diversity. C. genetic diversity, function diversity, and process diversity. D. genetic diversity, species diversity, and ecosystem diversity.