Lipids with a carbohydrate attached. Their role is to provide energy and also serve as markers for cellular recognition.

Amphipathic 

(1) Pertains to a molecule containing both polar (water-soluble) and nonpolar (not water-soluble) portions in its structure.

(2) Of, or relating to, a molecule having hydrophobic and hydrophilic regions.

Channel-Mediated diffusion

Carrier-Mediated facilitated diffusion

Simple Diffusion