What is another name or synonym for the water cycle?
A. Geologic cycle
B. Hydrologic cycle
C. Geosphere
D. Carbon cycle
Ans: B. Hydrologic cycle
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Alternative autotrophic routes to the Calvin cycle such as the reverse citric acid cycle and the hydroxypropionate pathway are unified in their requirement for
A) CO2. B) coenzyme A. C) NAD(P)H. D) organic compound(s) formed.
Oil-degrading bacteria are naturally present in the environment but cannot degrade an oil spill fast enough to avoid ecological damage. How can the actions of these bacteria be sped up?
a. Provide oil for them. b. Provide sugar as a carbon source. c. Provide nitrogen and phosphorus. d. Add water. e. Add NaCl.
What is the minimal number of genes needed for a cell to function?
Which of the following is true of Domain Archaea compared to other groups?
A) They are the only anaerobes on Earth. B) None of their genes work like those found in eukaryotes. C) Their cell wall and membrane biochemistry is unique. D) Most of their genes are similar to those found in bacteria. Refer to the scenario below, and then answer the following question(s). As part of your field biology independent study, you visit a small lake with an extremely high salt concentration. Searching with nets and other sampling devices, you find no fish, plants, algae, or any visible signs of life in the lake. Still, you decide to take a few samples of the water back to the lab. You find the sample teeming with very small cells, hundreds of times smaller than a typical human cell. These cells have cell walls, which you analyze chemically and find they are not made of peptidoglycan or cellulose.