Inquiring About Plants by Uno Gordon E.;Sundberg Marshall D.;Hemingway Claire A.;

Author:Uno, Gordon E.;Sundberg, Marshall D.;Hemingway, Claire A.;
Language: eng
Format: epub
ISBN: 978-0-9848582-3-1
Publisher: Botanical Society of America

↬ As water diffuses across the membrane by osmosis, from the region of higher free energy of water (outside the cell) to the region of lower free energy (the cytoplasm), the cell swells, the membrane stretches and starts to leak, and eventually the cell bursts and the cytoplasm flows out of the cell into solution.

Now consider the plant cell where a similar membrane is bounded to the outside by a semi-rigid cell wall. The first thing to realize is that the cell wall is NOT solid! Rather, the cellulose is like a plastic mesh bag sometimes used for packaging fruits. The mesh itself is very flexible, but it has a lot of tensile strength (it cannot be pulled apart very easily; Fig 2.5A).

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