Consider the Transport of Glucose into an Erythrocyte by Facilitated

question 54

Multiple Choice

Consider the transport of glucose into an erythrocyte by facilitated diffusion.When the glucose concentrations are 5 mM on the outside and 0.1 mM on the inside,the free-energy change for glucose uptake into the cell is: (These values may be of use to you: R = 8.315 J/mol·K;T = 298 K;9 (Faraday constant) = 96,480 J/V;N = 6.022 *10²³/mol. )

• A)less than 2 kJ/mol.
• B)about 10 kJ/mol.
• C)about 30 kJ/mol.
• D)about -30 kJoule/mol.
• E)impossible to calculate without knowledge of the membrane potential.

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Definitions:

Secondary Alcohol

An organic compound where the hydroxyl (—OH) group is bonded to a carbon atom that is attached to exactly two other carbon atoms.

T-butyl Alcohol

A common name for tert-butyl alcohol, an organic compound with the formula (CH3)3COH, used as a solvent and in the production of other chemicals.

Ethanol

A two-carbon alcohol with the formula CH3CH2OH, commonly used as a solvent and in alcoholic beverages.

Cyclopentanol

An organic compound characterized by a five-membered ring structure bonded to a hydroxyl group, used in various chemical syntheses.