Diffusion and Osmosis

What does selective permeability means?

• The movement of materials through (or across) the cell membrane

• The movement of molecules from an area of high concentration to a area of low concentration

• The movement of materials across the cell membrane that requires NO ENERGY from the cell.

• The ability of the cell membrane to allow some things to pass through while preventing other things from passing through

The movement of water through a semi-permeable membrane from a region of high concentration to a region of low concentration, tending to equalize the concentrations of the water.

• Osmosis

• Active Transport

• Diffusion

• Tonicity

Diffusion happens in liquids and gases because their particles move randomly from place to place.

• TRUE

• FALSE

All of the following statement about tonicity are CORRECT except:

• It describes how an intracellular solution can change the volume of a cell by affecting osmosis.

• A solution's tonicity often directly correlates with the osmolarity of the solution

• A solution with low osmolarity has a greater number of water molecules relative to the number of solute particles

• The tonicity of a solution also refers to the effect of a solution on a cell volume

A solution that has a higher solute concentration than another solution wherein water particles will move out of the cell will cause ____________

• Lysis

• Swelling

• Crenation

Tags

NGSS.HS-LS1-3

A solution that has a lower solute concentration than another solution wherein water particles will move into the cell will cause the cell to ______ and eventually ________

• shrink; crenate

• shrink;lyse

• swell; lyse

• swell; shrivel

Tags

NGSS.HS-LS1-3

Which of the following statement is NOT TRUE about isotonic solution?

• Water particles tend to move into the cell

• There is no net movement of water particles

• A solution that has the same solute concentration as another solution.

• The overall concentration on both sides of the cell membrane remains constant.

In what tonicity of NaCl could the red blood cells submerge?

• Isotonic

• Hypertonic

• Hypotonic

In what tonicity of NaCl could the red blood cells submerge?

• 10%

• 0.90%

• 0.10%

Tags

NGSS.HS-LS1-3

Which of the following NaCl solution is considered as hypertonic?

• 10%

• 0.85%

• 0.10%