Question

Simple diffusion, facilitated diffusion, active transport, osmosis)
a) Identify the process that is applicable only to water molecules ?
b) How does this process differ from other processes?​

Answer 1

Answer:

Simple diffusion – movement of small or lipophilic molecules (e.g. O2, CO2, etc.) Osmosis – movement of water molecules (dependent on solute concentrations) Facilitated diffusion – movement of large or charged molecules via membrane proteins (e.g. ions, sucrose, etc.)

Answer 2

Explanation:

a)Active transport is not the same as facilitated diffusion.

Both active transport and facilitated diffusion do use proteins to assist in transport. However, active transport works against the concentration gradient, moving substances from areas of low concentration to areas of high concentration

b)Osmosis is a type of simple diffusion in which water molecules diffuse through a selectively permeable membrane from areas of high water concentration to areas of lower water concentration.