Question

why the concentration of a number ions and other materials is higher in vacuoles than those in cytoplasm

Answer 1

Why is the concentration of certain ions in the vacuole higher than in the cytoplasm of plant cells 2) Name an organism which has two nuclei in it's cell 3)

Answer 2

Answer:

Because vacuoles in plants possess several active transport system which pumps ions from the cytoplasm into the vacuole.

Explanation:

• Vacuoles in plants play an important role in osmoregulation. This organelle occupies about 90% of the cell volume. It is surrounded by a specialized membrane called- tonoplast.

• This vacuolar sap contains various digestive enzymes, ions, metabolites, and waste products. This tonoplast membrane is differentially permeable and regulates the movement of ions and metabolites into the vacuole.

• The pH inside the vacuole is thus slightly lower than the surrounding cytoplasm and this lower pH is essential for maintaining fluidity and making enzymes work efficiently and that is maintained by pumping in H⁺ions by the Hydrogen pumps present in the tonoplast membrane.

Tonoplast facilitates the transport of a no. of ions, salts, and other materials against the concentration gradient into the vacuole, which is why their concentration is significantly higher in vacuoles than those in the cytoplasm.