26 Jun How many subunits does the sodium potassium ATPase pump have
Question
QUESTION 1
How many subunits does the sodium potassium ATPase pump have ? M
a. 1
b. 2
c. 3
d. 4
10 points
QUESTION 2
When the sodium potassium ATPase pump is turned on, how many sodiums are pumped out of the cell?
a. 1
b. 2
c. 3
d. 4
10 points
QUESTION 3
The sodium potassium ATPase pump pumps how many potassiums into the cell?
a. 1
b. 2
c. 3
d. 4
10 points
QUESTION 4
WHICH OF THE FOLLOWING HORMONES IS KNOWN TO INCREASE THE ACTIVITY OF THE SODIUM POTASSIUM ATPASE PUMP?
a. CORTISOL
b. ALDOSTERONE
c. ESTROGEN
d. PTH
10 points
QUESTION 5
WHICH OF THE FOLLOWING DRUGS INHIBITS THE SODIUM POTASSIUM ATPASE PUMP?
a. DIGOXIN
b. HYDROCORTISONE
c. METFORMIN
d. NONE OF THE ABOVE
10 points
QUESTION 6
DIGOXIN IS A
a. POSITIVE IONOTROPIC AGENT
b. NEGATIVE INOTROPIC AGENT
c. A POSITIVE CHRONOTROPIC AGENT
d. NONE OF THE ABOVE
10 points
QUESTION 7
THE SODIUM/POTASSIUM PUMP CONTAINS BUILT IN
a. GTPase ACTIVITY
b. ATPase activity
c. protein kinase activity
d. none of the above
10 points
QUESTION 8
Phosphorylation 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
10 points
QUESTION 9
DEPHOSPHORYLATION 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
d. NONE OF THE ABOVE
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