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QUESTION 1How many subunits does the sodium potassium ATPase pump have ? Ma.1b.2c.3d.4QUESTION 2When the sodium potassium ATPase pump is turned on, how many sodiums are pumped out of the cell? a.1b.2c.3d.4 QUESTION 3The sodium potassium ATPase pump pumps how many potassiums into the cell?a.1b.2c.3d.4QUESTION 4WHICH OF THE FOLLOWING HORMONES IS KNOWN TO INCREASE THE ACTIVITY OF THE SODIUM POTASSIUM ATPASE PUMP? a.CORTISOLb.ALDOSTERONE c.ESTROGENd.PTH QUESTION 5WHICH OF THE FOLLOWING DRUGS INHIBITS THE SODIUM POTASSIUM ATPASE PUMP? a.DIGOXINb.HYDROCORTISONEc.METFORMIN d.NONE OF THE ABOVE QUESTION 6DIGOXIN IS A a.POSITIVE IONOTROPIC AGENT b.NEGATIVE INOTROPIC AGENT c.A POSITIVE CHRONOTROPIC AGENT d.NONE OF THE ABOVE QUESTION 7THE SODIUM/POTASSIUM PUMP CONTAINS BUILT IN a.GTPase ACTIVITYb.ATPase activity c.protein kinase activity
d.none of the above 10 points QUESTION 8Phosphorylation of the pump leads to which of the following? a.increased affinity for sodium b.decreased affinity for sodium c.increased affinity for potassium d.none of the above QUESTION 9DEPHOSPHORYLATION OF THE PUMP a.RESULTS IN A CONFORMATIONAL CHANGE THAT DELIVERS POTASSSIUM OUT INTO THE ECF b.RESULTS IN A CONFORMATIONAL CHANGE THAT DELIVERS POTASSSIUM INTO THE ICF c.RESULTS IN A CONFORMATIONAL CHANGE THAT DELIVERS POTASSSIUM OUT OF THE CELL dNONE OF THE ABOVE QUESTION 10INCREASING THE ACTIVITY OF THE SODIUM POTASSIUM ATPASE CAN POTENTIALLY HAVE WHAT EFFECT ON THE MEMBRANE POTENTIAL? a.HYPERPOLARIZATION b.DEPOLARIZATION c.SIGNIFICANT DEPOLARIZATION
d.NONE OF THE ABOVE QUESTION 11WHEN A CELL IS EXPOSED TO LOW OXYGEN, THE ACTIVITY OF THE SODIUM /POTASSIUM ATPASE PUMPa.INCREASESb.DECREASES c.INITIALLY INCREASES , FOLLOWED BY A DECREASE. d.NONE OF THE ABOVE
The physical process through which water and solute move through a membrane when hydrostatic pressure gradient exists across the membrane is the process of?
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You have discovered a novel compound (U-500), which is an inhibitor of mitochondrial ATP synthesis. You observe that when U-500 is addedto cells or isolated mitochondria, the NAD+/NADH ratio decreases. Do you think that U- 500 is an uncoupling age..
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