PS6 - BIOAP 458, 2011 Prof. Beyenbach VRT 8004 Name: Raw...

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-1/4- BIOAP 458, 2011 Prof. Beyenbach VRT 8004 Name: Raw Score: /77 PROBLEM SET 6 Pumps, Cell Volume Regulation, Epithelial Tranport 1) (6 pts.) Match to the best possible choice for a P-type ion pump: ____ E 1 a) outward facing enzyme, picking up K + ____ E 1 -E 2 transition b) binding of ATP ____ E 2 -E 1 transition c) inward facing enzyme, picking up Na + ____ trapping Na + d) dephosphorylation of E 2 ____ E 2 e) hydrolysis of ATP ____ trapping K + f) phosphorylation of E 1 2) (6 pts.) a) List three cotransporters (symporters) shown in the Figure below. b) List the three exchange transporters (antiporters).
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-2/4- 3) (6 pts.) At least in theory a) carriers and pumps are reversible, b) in the figure of problem 2, Na + and glucose could be exported from the cell if the outward glucose driving force is bigger than the inward Na + driving force, c) running the V-type H + ATPase backwards produces ATP. 4)
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This note was uploaded on 04/09/2011 for the course BIOAP 4580 taught by Professor Beyenbach,k. during the Spring '11 term at Cornell University (Engineering School).

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PS6 - BIOAP 458, 2011 Prof. Beyenbach VRT 8004 Name: Raw...

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