Exam 5: The Working Cell
Exam 1: Biology: Exploring Life47 Questions
Exam 2: The Chemical Basis of Life73 Questions
Exam 3: The Molecules of Cells89 Questions
Exam 4: A Tour of the Cell93 Questions
Exam 5: The Working Cell81 Questions
Exam 6: How Cells Harvest Chemical Energy82 Questions
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Exam 15: Tracing Evolutionary History88 Questions
Exam 16: Microbial Life: Prokaryotes and Protists80 Questions
Exam 17: The Evolution of Plant and Fungal Diversity85 Questions
Exam 18: The Evolution of Invertebrate Diversity81 Questions
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Exam 21: Nutrition and Digestion96 Questions
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Exam 23: Circulation81 Questions
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Exam 35: Behavioral Adaptations to the Environment54 Questions
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Water movement is important in urine formation in the kidneys. Urine is formed when the blood is filtered by the kidneys into kidney tubules. Three figures are presented here that relate to how the kidney tubules respond to the administration of the hormone vasopressin. The direction that water flows in these figures is from the kidney tubules back into the blood.
Figure A. Changes in permeability of tubules in the kidney in response to the hormone vasopressin (AVP), which aids in osmoregulation.
Figure B. Density of aquaporins in kidney tubule cells before, during, and after administration of vasopressin.
Figure C. Permeability of tissues to water before, during, and after administration of vasopressin.
-How do the data in Figure A relate to the data in Figures B and C?
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