What is the effect of 0.9% NaCl solution on plant and animal cells?

Question

What is the effect of 0.9% NaCl solution on plant and animal cells?

Answer 1

A solution of 0.9% NaCl is isotonic to the cytoplasm of cells. If either a plant or animal cell is placed in such a solution there is no concentration gradient across the cell membrane. There will be equal movement of water molecules in both directions across the membrane giving no overall movement of water by osmosis. The cells would maintain their size and shape.

Hopr this helps!

Answer 2

A solution of 0.9% NaCl is isotonic to cells, which means that these cells maintain their normal appearance.

A greater solution (more than 0.9%) is hypertonic, which means that they shrivel up.

A lesser solution (less than 0.9%) is hypotonic and the cells swell up.

Answer 3

If the membranes of the cells has less relative salt they will lyse-- what happens to celery if left in salt water. The material literally is sucked through via osmotic pressure. The opposite can also be true and is why over-hydrogenated celery is very hard to snap in half.

More sciency:

.9 NaCl is isotonic with blood serum and that means that it will diffuse out of the blood vessel after IV injection in a similar fashion to the components of the blood serum itself. .9Nacl contains about 154 mOsm/L of Na and 154 mOsm/L of Cl giving the solution an osmolarity of 308 mOsm/L. The osmolarity of blood is about 300-310 mOsm/L so the two are very close and thats why .9NaCl is considered isotonic for IV solution.