Why does salt effect the rate of the contractile vacuole of a paramecium?

Answer 1

The surrounding environment is no longer isotonic with the contents of the cell. Diffusion of salt molecules from low concentration to high concentration would affect the paramecium's ability to retain intact cytoplasm and organelles. The contractile vacuoles act as a defense mechanism against an either hypertonic or hypotonic situation.

Answer 2

Salt affects the rate of the contractile vacuole in a paramecium by altering the osmotic pressure of the surrounding environment. An increase in salt concentration outside the paramecium causes water to move out of the cell by osmosis, leading to a faster contraction of the vacuole to expel excess water. Conversely, a decrease in salt concentration outside the cell results in slower contractions as less water is being expelled.

Answer 3

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