Ouabain specifically inhibits the Na+K+ ATPase activity of animal tissues but is not known to inhibit any other enzyme. When ouabain is added to thin slices of living kidney tissue, it inhibits oxygen consumption by 66%. Why? What does this observation tell us about the use of respiratory energy bykidney tissue?

Ouabain specifically inhibits the Na+K+ ATPase activity of animal tissues but is not known to inhibit any other enzyme. When ouabain is added to thin slices of living kidney tissue, it inhibits oxygen consumption by 66%. Why? What does this observation tell us about the use of respiratory energy bykidney tissue?

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter2: Cell Physiology

Section: Chapter Questions

Problem 2TAHL

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When blue crabs living in full-strength seawater swell duringmolting, they take on the H2O that bloats their bodies from theseawater in which they live. They obtain some of the H2O bydrinking. In addition, data show that the activity of Na+–K+-ATPase in their gills increases as they start to swell duringmolting. This rise in ATPase activity suggests that the gillsincrease active transport of ions from the surrounding seawaterinto the blood of the crabs. How could this process help accountfor uptake of H2O?
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In nature, there are some organisms that are unable to perform aerobic respiration in the presence of oxygen. What would be the possible reason(s) behind this phenomenon?
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