Lab Osmosis and Diffusion Flashcards Preview

Biology I (116) > Lab Osmosis and Diffusion > Flashcards

Flashcards in Lab Osmosis and Diffusion Deck (10)
1

How do water molecules diffuse

From area of high concentration to low concentration

2

The concentration of water vs solute in aqueous solution

Water decreases when solute increases, vise versa ( since the solute takes up space that would otherwise be full of water.

3

Osmosis

The diffusion of water across a cell membrane

4

The direction water moves depends on

The concentration gradient across the membrane

5

In an aqueous solution water tends to diffuse either into or out of cells. Why

Because the cytoplasmic membrane is permeable to water but impermeable to polar solutes dissolved in the water.

6

Tonicity

Refers to the concentration of solute compared to inside of the cell

7

a solution hypertonic to the cell

High solute/ low water

8

The effect of hypertonic solution on a cell

cell: low solute /high water

The water would diffuse out the cell would shrink

9

Hypotonic

Low solute/High water

10

The effect of hypotonic solution on a cell

high solute/ low water

Water will diffuse in and possibly burst