Consider a uniport system where a carrier protein transports an uncharged substance A across a cell membrane. Suppose that at a certain ratio of [A]inside to [A]outside, the AG for the transport of substance A from outside the cell to the inside, Aoutside → Ainside, is -12.1 kJ/mol at 25°C. What is the ratio of the concentration of substance A inside the cell to the concentration outside? [A]inside [A]outside 321.1 Incorrect Choose the true statement about the transport of A under the conditions described. Because AG is negative, the ratio [A]inside/[A]outside must be greater than one. Increasing [A]outside will cause AG for movement of Aoutside to Ainside to become a smaller negative number. Decreasing the concentration of the uniport protein in the membrane will cause AG to become a larger negative number. Movement of Aoutside to Ainside will be spontaneous.

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Chapter3: The Plasma Membrane And Membrane Potential
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Q13 // CH 12

Consider a uniport system where a carrier protein transports an uncharged substance A across a cell membrane. Suppose that at
a certain ratio of [A]inside to [A]outside, the AG for the transport of substance A from outside the cell to the inside,
Aoutside → Ainside, is -12.1 kJ/mol at 25°C.
What is the ratio of the concentration of substance A inside the cell to the concentration outside?
[A]inside
[A]outside
321.1
Incorrect
Choose the true statement about the transport of A under the conditions described.
Because AG is negative, the ratio [A]inside/[A]outside must be greater than one.
Increasing [A]outside will cause AG for movement of Aoutside to Ainside to become a smaller negative number.
Decreasing the concentration of the uniport protein in the membrane will cause AG to become a larger
negative number.
Movement of Aoutside to Ainside will be spontaneous.
Transcribed Image Text:Consider a uniport system where a carrier protein transports an uncharged substance A across a cell membrane. Suppose that at a certain ratio of [A]inside to [A]outside, the AG for the transport of substance A from outside the cell to the inside, Aoutside → Ainside, is -12.1 kJ/mol at 25°C. What is the ratio of the concentration of substance A inside the cell to the concentration outside? [A]inside [A]outside 321.1 Incorrect Choose the true statement about the transport of A under the conditions described. Because AG is negative, the ratio [A]inside/[A]outside must be greater than one. Increasing [A]outside will cause AG for movement of Aoutside to Ainside to become a smaller negative number. Decreasing the concentration of the uniport protein in the membrane will cause AG to become a larger negative number. Movement of Aoutside to Ainside will be spontaneous.
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