Question

four equal strips a b c and d were cut from a potato whose cell sap concentration was 28.5% sugar . The strips were placed in sugar solutions of different concentrations as follows ; A-10%, B-15,%,C-25%,D-35% 1. what changes would you expect in strips A and D. 2. account for the changes in A and D

Answer 1

Answer:

Strip A will loose water and shrink because the content in the cellophane is hypertonic to the solution

Strip D will gain water and enlarge because the content in the dialysis tubing is hypotonic to the solution :)

Explanation:

Answer 2

The changes in strip A and Stip D are as follows-

1. The changes in strip A and Stip D are as follows- Strip A will swell.
2. The changes in strip A and Stip D are as follows- Strip A will swell. Strip D will shrink.

EXPLANATION:

• The capacity of the solution to change the volume of cells by altering its water concentration is called the tonicity of the solution.
• This movement of water in and out of the cell causes the cell to swell or shrink in size through differences in the osmotic pressure between the intracellular concentration and the solution.
• In the given question, the cell concentration of the four strips is 28.5%.
• The concentration of Sugar in solution A is 10%.
• Solution A is hypnotic as the solute(sugar) concentration is less than the potato cell concentration.
• Therefore, water will move out of the cell to equalize the osmotic pressure gradient.
• Hence, Strip A will shrink.
• The concentration of sugar in solution D is 35%.
• Solution D is a hypertonic solution as the solute concentration is more than the potato cell concentration.
• Therefore, water will move into the cell to equalize the osmotic pressure gradient between the cell and the solution.
• Hence, strip D will swell.

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