The Plasma Membrane The Plasma Membrane - Gateway to the Cell.
Types of Transport Across Cell Membranes 1. Passive Transport ▪ Does not require energy ▪ Substances move from high to low ▪ Solutes move down the concentration.
The Plasma Membrane – Gateway to the Cell. The Plasma Membrane is Semipermeable Small molecules and larger hydrophobic molecules move through. Ions, hydrophilic.
Cellular Transport. Cell membrane is selectively permeable Factors that affect permeability: –Size –Polarity –Presence or Absence or Protein Channels.
