Answer :

Activity: Osmosis in Potato Cells

Materials:

- Potatoes

- Water

- Salt (sodium chloride)

- Three bowls

- Knife or cutter

- Ruler or scale

Procedure:

1. Cut three potato slices of equal thickness.

2. Place one slice in a bowl of water, one in a bowl of salt water (high concentration), and one in a bowl of pure water.

3. Let them sit for a few hours or overnight.

4. Measure and record the initial and final weights of each potato slice.

5. Observe and note the changes in shape, size, and texture.

Results:

- The potato slice in water will increase in weight and size (swell).

- The potato slice in salt water will decrease in weight and size (shrivel).

- The potato slice in pure water will remain relatively unchanged.

Conclusion:

Osmosis occurs in potato cells, causing water to move in or out of the cells based on concentration gradients. This activity demonstrates how living organisms regulate water balance through osmosis.