A Cell Is Placed in a Solution of Large Carbohydrate

question 16

Multiple Choice

A cell is placed in a solution of large carbohydrate molecules tagged with a red dye. Soon the cell is dark red, showing a concentration of the nutrient much higher than the external solution. We add a reagent that blocks the use of ATP. What result would you expect from this experiment?

• A) The nutrient would continue to rapidly enter the cell by diffusion because as a nutrient it is constantly being used in cell metabolism, so the cell will become more red.
• B) The color will remain the same since all future transfer will stop.
• C) The color will fade as the import of the nutrient stops and diffusion evens the concentrations as it moves the nutrient molecules out of the cell.
• D) The cell will continue to get darker since the import of the nutrient does not involve ATP.
• E) The cell will die without access to ATP.

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Definitions:

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