1 A cell that is 35 starch is placed in a 18 starch solution

1. A cell that is 3.5% starch is placed in a 1.8% starch solution. Which direction will water flow?

In, Out, or No Net Flow?

2. A cell that is 6.2% NaCl is placed in a solution that is 10.2% NaCl. What will be the net direction of water flow?

In, Out, or No Net Flow?

Solution

Ans:

A cell that is 3.5% starch is placed in a 1.8% starch solution. Then the water flow into the cell

A cell that is 6.2% NaCl is placed in a solution that is 10.2%. Then the water flow out of the cell/solution

Explanation for the above: Water in cells moves toward the highest concentration of salt. If there is more salt in a cell than outside it, the water will move through the membrane into the cell, causing it to increase in size, swelling up as the water fills the cell in its imperative to combine with the salt. If a higher concentration of salt is placed outside of the cell membrane, the water will leave the cell to bond with it. The loss of water from this movement causes plant cells to shrink and wilt.