Three lab groups carried out an experiment to identify the correct molarities for five solutions. Each unknown contained one of

Question

13 days ago

15

Three lab groups carried out an experiment to identify the correct molarities for five solutions. Each unknown contained one of

the following sucrose concentrations: 0.0 M, 0.2 M, 0.4 M, 0.6 M, 0.8 M, and 1.0 M. Each data entry represents the average of 3 sample replications of 1 cm3 sweet potato cubes expressed as percent change in mass after an overnight (24 hr) soak in the unknown solutions. From the data given, which statement most accurately describes what is occurring in response to a particular unknown solution.
A) Unknown solution E contains the highest concentration of sucrose and the change in mass is due to the active transport of sucrose into the cell in exchange for water molecules.
B) Osmosis of water molecules from unknown solution A likely caused the increase in mass observed.
C) Passive transport of sucrose out of the potato cells explains the change in mass observed for unknown solution F.
D) Unknown solution C represents a sucrose molarity slightly lower than the molarity of sweet potato cells, thus water is transported out of the cells.

Biology

2 answers:

inysia [1.6K] · Answer 1 · 2026-03-16T02:53:40+03:00

Answer:

The rise in mass noted is likely attributed to the osmosis of water molecules from an unidentified solution A.

Explanation:

Osmosis can be understood as the movement of water molecules from a region with a higher concentration to one with a lower concentration along the concentration gradient. Consequently, this process occurs without the need for energy.

Since we noticed an increase in the mass of the sweet potato, we can deduce that this mass gain resulted from osmosis, considering that the water concentration outside the cell was greater than that inside the cell.

Rainbow [1.7K] · Answer 2 · 2026-03-16T02:52:41+03:00

Rainbow [1.7K]13 days ago

4 0

The potato maintained its mass in the solution with 20% concentration because that was an isotonic solution. The image shows a plant cell in an isotonic environment where water is entering and exiting the cell to keep balance.