Question

Ions A and B in the Table below are both monovalent cations associated with a cell with a membrane potential of -98 mV. Constants you may need to answer the questions associated with the Table are as follows: R = 0.002 kcal/mol ^o;     T = 310^o;     F = 0.023 kcal/mol mV

Ion	ICF (mM)	ECF (mM)
A	14.5	96.8
B	105.6	3.2

1. What is Ion A’s equilibrium potential? (round to nearest whole number and give units) _______________________________
2. What is the direction (in or out) of Ion B’s electrochemical gradient across the membrane? _______________________

The Table lists initial solute concentrations across a 100 MWCO dialysis membrane. Answer the questions below the table for the condition that would occur when the system reaches equilibrium. Constants you will need are as follows:

R=0.082 L atm/mol K; T=310 K

Solution A	Solution B
2.0 mM CaCl2	4.0 mM Albumin
2.5 mM Glucose	4.0 mM Glucose
3.0 mM NaCl	2.0 mM Urea
1.5 mM Albumin
3.0 mM Urea

3. What is the osmotic pressure (in mmHg) exerted by Solution A? (round to nearest whole number and give uni
4. What direction will water move across the membrane?   Circle one:          A to B                    B to A   

Answer 1

Answer: Please find the attached pictures for solution.