How can diffusion occur in one direction?

Answer 1

Diffusion is the net movement of molecules from the region of higher concentration to region of lower concentration.

Explanation:

Diffusion is a passive process. It is like when you open a bottle of perfume, soon the whole room will be covered with its smell. From region where the concentration is high, the molecules move to the regions where the concentration is low down the concentration gradient unless equilibrium is reached. Diffusion is the net movement of molecules from the region of higher concentration to region of lower concentration.

Answer 2

it would depend on the concentration gradient. diffusion occurs along the c.gradient e.g if there is a higher concentration of molecules outside the cell and low concentration of molecules in cell then molecules will diffuse into the cell and vice versa.

Answer 3

Diffusion occurs in a direction from higher concentration towards lower concentration.

Answer 4

Random motions cause particles to move in and out of cells in any direction.

Answer 5

Diffusion occurs in one direction because it follows the concentration gradient from high to low. If the solution is isotonic, then the rate will be the same on both directions.

Answer 6

Molecules or particles with different sizes

Answer 7

From areas of high concentration to areas of low concentration.

Answer 8

low to high concentration

Answer 9

Down a concentration gradient