Map Sapling Learning macmillan learning Consider a uniport system where a carrie

Question

Map Sapling Learning macmillan learning Consider a uniport system where a carrier protein transports a uncharged substance A across a cell membrane. Suppose that at a certain ratio of [Ainside to [Aloutside, the AG for the transport of substance A from outside the cell to the inside, Aoutside-> Ainside, is-14.7 kJ/mol at 25°C. What is the ratio of the concentration of substance A inside the cell to the concentration outside? Number inside Joutside Choose the true statement about the transport of A under the conditions described above. O Since AG is negative, the ratio [Alnside/[Aloutside must be greater than one. O Movement of Aoutside to Ainside will be spontaneous. Increasing [Aloutside will cause AG for movement of Aautside to Ainside to become a smaller negative number Decreasing the concentration of the uniport protein in the membrane will cause G t become a larger negative number O Previous Give Up & View Solution Check Answer 0 Next Exit Hint

Explanation / Answer

A)

apply

dG =-RT*ln(K)

K = exp(-DG/(RT))

K = exp(14700/(8.314*298))

K = 377.37

K = A[inside] / A[outside]

377.37= A[inside] / A[outside]

Q2.

a)

true, mainly due to dG and K relationship

b)

true, since it is spontanous/favoured

c)

False, it becomes more favoured, since coutnerbalance implies more movement

d)

not really, since inside the uniport protein the reaciotn remains the same

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