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Imagine a small syntyetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mM glucose and 1mM sodium chloride. If the vesicle is placed in pure water what will happen first?

A. Na+ diffuses out.
B. cl- diffuses out.
C. H2O diffuses in.
D. Glucose diffuses out.
E. NaCl diffuses out.

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Answer:

The preferable statement will be - C.

C. H₂O diffuses in.

Explanation:

  • The synthetic vesicle is made up of pure phospholipids as our cells do. The cell contains 1 mM glucose and 1 mM sodium chloride at the intracellular lumen. This is the resemblance model of our cell.
  • When the cell is placed into pure water, at very first, endosmosis will happen as the cell's concentration is too high. Pure water concentration is less than the cell's concentration.
  • Low concentration fluid will go to the higher concentric substances. This is the reason water will diffuse into the cell quickly.
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