BIOL 3225 Lecture Notes - Lecture 2: Lipid Bilayer, Facilitated Diffusion, Passive Transport
Document Summary
There are basically transports embedded in the membrane to help solutes move out of the cell or into the cell. The two types of transports in the membrane are. Passive transport( requires no energy at all bitch) and active transport ( requires energy hoe) So in passive transport, solutes already have that natural desire to establish equilibrium. So to get to equilibrium, solutes will naturally move from high concentrations to low concentrations. In passive transport, there are two ways solutes can move like this as described above. This is through simple diffusion and facilitated diffusion. Sooo solutes that are small, uncharged and nonpolar will typically pass directly through the phospholipid bilayer naturally and this process is called simple diffusion. Sooo solutes that are relatively small, charged and polar will typically require a protein assistant to help them pass through the phospholipid bilayer, either a channel protein or carrier. Now moving on to channels or channel proteins.