he concentration of a sugar is high inside a cell and slightly lower outside the cell. What is most likely to occur if the sugar
molecules can cross the membrane? Sugar molecules maintain their concentration gradient. Sugar molecules move inside the cell membrane. Sugar molecules move toward the nucleus. Sugar molecules move outside of the membrane.
If the sugar molecules are able to move across the cell membrane, they would move from an area of high concentration to an area of low concentration to establish equilibrium. In this case, the sugar molecules would move outside the membrane from the higher concentration to the lower concentration outside the cell.
A change in the color of a substance -- this one is indeed a chemical change. Think of iron, if iron turns reddish, it's a completely different substance.
