Exam 4: Membrane Transport

Solution 1 has a solute concentration of 10 mOsm.Solution 2 has a solute concentration of 3 mOsm.Solution 3 has a solute concentration of 25 mOsm.Solution 4 has a solute concentration of 10 mOsm.Which of the solutions are isotonic?

When comparing the solute concentration of two solutions,the ________ solution has a lower solute concentration.

Solution 1 has a solute concentration of 10 mOsm.Solution 2 has a solute concentration of 3 mOsm.Solution 3 has a solute concentration of 25 mOsm.Solution 1 is ________ to solution 2.

Given two aqueous solutions with different concentrations of solute,separated by a selectively permeable membrane (permeable to water,but not solute),water will move from the solution with ________ solute concentration to the solution with ________ solute concentration.

A membrane that allows some substances to travel across it while restricting the passage of others is ________.

Solution 1 has a solute concentration of 10 mOsm.Solution 2 has a solute concentration of 3 mOsm.Solution 3 has a solute concentration of 25 mOsm.Solution 1 is ________ to solution 3.

Beaker 1 contains water at 23 degrees C.Beaker 2 contains water at 5 degrees C.Beaker 3 contains water at 95 degrees C.A drop of the same blue dye was placed in each beaker.After 10 minutes,the dye in beaker 1 moved 10 mm from the origin,whereas the dye in beakers 2 and 3 moved 2 mm and 40 mm from the origin,respectively.Which of the following statements properly explains this observation?

If a red blood cell,which has an internal solute concentration of 280 mOsm,is placed in a solution of pure water (0 mOsm)________.

Which of the following statements explains the observation that dye diffuses more quickly as temperature increases?

When comparing the solute concentration of two solutions,the ________ solution has a higher solute concentration.

When placed in isotonic solution,red blood cells will ________.

A ________ is a substance that dissolves when added to a solvent.

Beaker 1 contains water at 23 degrees C.Beaker 2 contains water at 5 degrees C.Beaker 3 contains water at 95 degrees C.In which beaker will the rate of diffusion be greatest?

Which of the following substances will most freely travel across the plasma membrane?

At which temperature would the rate of diffusion of dye molecules be the lowest?

Substances tend to move from areas of ________ concentration to areas of ________ concentration.

As temperature increases,the rate of diffusion of a solute will ________.

At which temperature would the rate of diffusion of dye molecules be the highest?

Which of the following conditions must be met if diffusion across a membrane is to occur?

________ transport requires the input of energy,whereas ________ transport does not.