Regarding the tonicity and osmolarity of solutions, which of the following statements is not true?
A. Hypoosmotic solutions are always hypotonic.
B. Isotonic solutions are always isoosmotic.
C. The term "tonicity" refers to the effect that a solution has on the degree of stretch or shrinking of the cell membrane.
D. Hypertonic solutions are always hyperosmotic.
E. The term "osmolarity" refers to the osmotic properties of a solution, regardless of its tonicity.
Answer: B
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