Question

question 10
1 pts
a cell whose cytoplasm has a concentration of 0.02 molar glucose is placed in a test tube of water containing 0.04 molar glucose. assuming that glucose is not actively transported into the cell, which of the following terms describes the tonicity of the external solution relative to the cytoplasm of the cell?
o hypertonic
o isotonic
o hypotonic

Explanation:

• Hypertonic: A hypertonic solution has a higher solute concentration compared to another solution (in this case, the cell's cytoplasm). Here, the external solution has a glucose concentration of \(0.04\) molar, and the cell's cytoplasm has a glucose concentration of \(0.02\) molar. Since \(0.04> 0.02\), the external solution is hypertonic relative to the cell's cytoplasm.
• Isotonic: An isotonic solution has the same solute concentration as another solution. But \(0.04

eq0.02\), so this option is incorrect.

• Hypotonic: A hypotonic solution has a lower solute concentration. Since \(0.04 > 0.02\), the external solution is not hypotonic relative to the cell's cytoplasm.

Answer:

Hypertonic