You may have heard the "fact" that snails and slugs "melt" when exposed to salt.   A snail's mantle (its outer covering) is a selectively permeable membrane (though not as permeable as a cell membrane). Water can freely pass through the snail's mantle but solutes like salt cannot.   The snail's body contains roughly 30% solute and 70% solvent (water). The salt on the surface of the snail's body creates an environment that is 100% salt.   i

I don’t understand this

Why does water enter a cell that is placed in a hypotonic solution?

Some animals are osmoconformers, meaning that they maintain the tonicity/osmolarity of their body fluids equal to that of the external environment. Hydroids, a type of cnidarian, are osmoconformers. But they don't move and thus are adapted to the environment they live in. A) What would happen if you take a marine hydroid and transfer it into a freshwater aquarium? B) What would happen if you take a freshwater hydroid and transfer it into a saltwater aquarium? C) Sharks are extraordinary osmoconformers. Bull sharks store urea in their tissues and use it to match the tonicity of their tissues to that of the surrounding environment. Some sharks can move from saltwater to freshwater, hypothesize what changes will sharks do in order to adjust when moving from saltwater to freshwater and vice versa. Explain your answer in terms of tonicity and specify the direction of water movement and urea concentration.

Severe vomiting and diarrhea cause a loss of water and solutes from extracellular fluids. If the person was given only water, what effect would this have on the solute concentration of the extracellular fluids? Would osmosis results in water entering or leaving cells?

The cell membrane is permeable to water but not to ions.  Select all that apply. Question options:   Beaker A is isotonic to the cell.    Some water in cell A is moving in and out of the cell.    There is a net movement of water into Cell B.    Beaker C is hypotonic to Cell C.

Two solutions are separated by a semipermeable membrane that is permeable only to water.  The two solutions are: Solution A = 150 mM KCl Solution B = 150 mM Angiotensin (a 7 amino acid polypeptide) Which of the following would best explain the net movement in this situation? - water will move from the KCl side to Angiotensin side - water will move from Angiotensin side to KCl side - The Cl- ion will move to the angiotensin side until there is 75 mM Cl- on each side - Since Angiotensin is not an ion, it can move through the membrane - There is no net water movement as the concentrations are the same on both sides

Inflammatory responses are associated with lots of swelling, where fluids rush into cells and surrounding tissues. To help quickly relieve swelling, what type of IV solution could a doctor administer to her patient? hypotonic hypertonic isotonic

Osmosis in Osmosis is the movement of water from an area of A Animal Cells high water concentration to an area of low process so it doesn't need energy.||water concentration. Osmosis is a

Distilled water is to the relative ionic concentration inside of the cell. hypotonic O isotonic O hypertonic