What happens to a potato core in salt water?
If the salt concentration in the cup is higher than inside the potato cells, water moves out of the potato into the cup. This leads to shrinkage of the potato cells, which explains why the potato strips get smaller in length and diameter.
What happens when you put a potato in distilled water?
When the potato is put into the distilled water, it will absorb the water. The water is trying to dilute the salt inside the potato.
What do your results show about the concentration of the cytoplasm in the potato cells at the start of the experiment?
What do your results show about the concentration of the cytoplasm in the potato cells at the start of the experiment? The results show that the cell was hypotonic at the start of the experiment.
What is the independent variable in a potato experiment?
Independent variable: Concentration of sugar or salt solution. With a sixty-minute lesson, it can be challenging to outline the practical, prepare it, leave the potato pieces for enough time for sufficient osmosis to occur and analyse the results.
What is the independent and dependent variable in potato experiment?
What are the independent and dependent variables in this experiment? The independent variable in this lab is the sugar concentration of water int he bucket. The dependent variable is the change of weight of potatoes.
What happen to potato cell in hypertonic solution?
When a plant cell is placed in the hypertonic solution for example solution containing NaCl (aq), it loses water due to osmosis, shrinks and become flaccid (plasmolysis). This is because the salt concentration is high then the concentration in the cell sap.
What are the best resources for learning about diffusion and osmosis?
For a quick explanation of diffusion and osmosis, we highly recommend Paul Andersen’s AP Biology Lab 1: Diffusion and Osmosis video. The explanation of the potato lab starts at 5:36.
How does osmosis work in potatoes?
Osmosis is the process of diffusion of water molecules from an area of higher concentration to lower concentration. The concentration gradient between the potato and the sucrose solution leads to the number of molecules coming in and out of the potato.
What is the solute and solute concentration in the potato experiment?
The experiment uses pieces of potato that are placed in six different solutions of water each with a different solute concentration. The solute is sucrose and the concentrations are measured in units of molarity.
What materials are used in a potato core experiment?
The materials we used for the experiment were 5 potato cores similar in width, shape, and weight. We also used 5 equal sized glass beakers, the five unlabeled colored sugar solutions, and a scale to measure the potato cores before and after.