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11 June, 22:47

Crenation and hemolysis A cell placed in a hypertonic solution will shrink in a process called crenation. A cell placed in a hypotonic solution will swell in a process called hemolysis. To prevent crenation or hemolysis, a cell must be placed in an isotonic solution such as 0.9% (m/v) NaCl or 5.0% (m/v) glucose. This does not mean that a cell has a 5.0% (m/v) glucose concentration; it just means that 5.0% (m/v) glucose will exert the same osmotic pressure as the solution inside the cell, which contains several different solutes. Part D

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  1. 11 June, 23:47
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    Question options:

    A red blood cell is placed into each of the following solutions. Indicate whether crenation, hemolysis, or neither will occur.

    Solution A: 3.21% (m/v) NaCl

    Solution B: 1.65% (m/v) glucose

    Solution C: distilled H2O

    Solution D: 6.97% (m/v) glucose

    Solution E: 5.0% (m/v) glucose and 0.9% (m/v) NaCl

    Answer:

    Crenation: A, D, E

    Hemolysis: B, C

    Explanation:

    Crenation is an osmotic process in which blood cells shrink while placing hypertonic or alkaline solutions.

    Crention caused by these hypertonic solutions.

    A: 3.21% (m/v) NaCl (more solutes)

    D: 6.97% (m/v) glucose (more solutes)

    D: 5.0% (m/v) glucose and 0.9% (m/v) NaCl (more solutes)

    Hemolysis is the destruction of red blood cells in which cells bloat up and may explode while placing in a hypotonic solution.

    Hemolysis caused by these hypotonic solutions.

    B: 1.65% (m/v) glucose

    C: distilled H2O
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