Halobacterium salinarum and certain other extreme halophiles carry out light-driven synthesis of ATP under what condition?
A) low oxygen concentrations
B) low light
C) high oxygen concentrations
D) high carbon dioxide concentrations
Answer: A
Biology & Microbiology
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Balanced polymorphism is a type of
a. disruptive selection. b. sexual selection. c. directional selection. d. reproductive isolation. e. stabilizing selection.
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About 75% of the Earth's surface is covered by
A) water. B) bare ground. C) forest. D) grassland.
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The insects in the diagram above represent all of the following except
A. herbivores.
B. the second trophic level.
C. primary consumers.
D. producers.
Biology & Microbiology
The measure of how blood glucose levels are affected by a given amount of carbohydrate is:
A) monosaccharide ratio. B) sugar input. C) insulin index. D) glycemic load.
Biology & Microbiology