A plant cell was placed in a sucrose solution and changes within the cell were observed - VCE - SSCE Biology - Question 12 - 2005 - Paper 1
Question 12
A plant cell was placed in a sucrose solution and changes within the cell were observed.
From the information in the diagrams you can conclude that while the cell w... show full transcript
Worked Solution & Example Answer:A plant cell was placed in a sucrose solution and changes within the cell were observed - VCE - SSCE Biology - Question 12 - 2005 - Paper 1
Step 1
A. the cell wall was impermeable to water molecules.
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Answer
The plant cell wall is typically permeable to water. Thus, this statement is not correct.
Step 2
B. the vacuole membrane was impermeable to water molecules.
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Answer
The vacuole membrane (tonoplast) is generally permeable to water, allowing it to move in and out of the vacuole. This statement is also incorrect.
Step 3
C. sucrose molecules passed through the cell membrane.
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Answer
Cell membranes are selectively permeable and do not allow the passage of sucrose molecules easily, making this statement incorrect.
Step 4
D. water molecules passed through the cell membrane.
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Answer
This statement is correct as water molecules can freely cross the cell membrane due to the presence of aquaporins, which facilitate water transport.
