Which of the following is true regarding the use of osmotic pressure as an antimicrobial agent?
A) Exposing organisms to the air on a benchtop so they completely dry out is an example of using osmotic pressure as a means of microbial control.
B) Salt is an effective solute to create an osmotic pressure gradient outside of a cell; however, the use of sugar, such as in jams and jellies, works via a different mechanism.
C) Salts and sugars external to a microbe create a hypotonic environment, which causes lysis of the cell.
D) Exposing a microbe to a hypertonic environment draws water out of the cell, causing plasmolysis.
Correct Answer:
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