Explain how to determine the water potential of potato tissue using an osmosis experiment involving a range of sucrose solutions.
Understand the Problem
The question asks for a detailed explanation of an osmosis experiment to determine the water potential of potato tissue using different sucrose solutions. This involves understanding osmosis, water potential, and how to design and interpret the results of such an experiment.
Answer
An osmosis experiment with varying sucrose concentrations, measuring potato tissue mass changes to find equilibrium, determines water potential.
To determine the water potential of potato cells, you'll conduct an osmosis experiment using different concentrations of sucrose solutions. You will measure the initial and final masses of potato pieces after soaking them in the solutions. The point at which there is no change in mass (equilibrium) indicates the water potential of the potato tissue.
Answer for screen readers
To determine the water potential of potato cells, you'll conduct an osmosis experiment using different concentrations of sucrose solutions. You will measure the initial and final masses of potato pieces after soaking them in the solutions. The point at which there is no change in mass (equilibrium) indicates the water potential of the potato tissue.
More Information
Water potential is the measure of the relative tendency of water to move from one area to another, and is commonly measured in kilopascals (kPa).
Tips
A common mistake is not accounting for turgor pressure when calculating water potential. Remember that water potential is the sum of solute potential and pressure potential.
Sources
- Aim: To determine the water potential of a potato tuber by tissue ... - sherubtsebotmal.wordpress.com
- Potato Osmosis Lab - DataClassroom - about.dataclassroom.com
- Investigating Water Potential (OCR A Level Biology): Revision Note - savemyexams.com
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