Transport across the plamsa membrane

Three factors that affect the speed of diffusion

Concentratrion, molecular size, temperature

What can speed up the rate of diffusion

higher temperature

diffusion

from high to low concentration or move down the concentration gradient until equilibrium

Are the solutes of simple diffusion polar?

No, they are nonpolar

What are the nonpolar solutes of simple diffusion

oxygen, carbon, lipids, and hydrocarbons

Solutes of facilitated diffusion

Charged or polar solutes like ions or glucose

Direction of osmosis

Low to high concentration in solute

Isotonic

No net movement of water, no osmosis, no volume changes

Crenation

Result of the cell being place in a hypertonic solution