Unit 4 cell transport
Biology 7 3
Chapter 7
Quiz 1
Types of Transport Across Cell Membranes 1. Passive Transport ▪ Does not require energy ▪ Substances move from high to low ▪ Solutes move down the concentration.
Cell Membrane Also known as the Plasma Membrane Surrounds the cell.
The Plasma Membrane and Homeostasis 2 Functions of Plasma Membrane Protective barrier Regulate transport in & out of cell (selectively permeable) Allow.
Daily Warm up 9/17/10 1.What two things must happen for diffusion to occur? 2.Define these three words: Isotonic solution, Hypotonic, Hypertonic. (where.
Chapter 4 Cell Membranes. Chapter 4 2 Cell Membrane Functions 1.Selectively choose what’s inside or outside the cell…creating a concentration gradient.
The Plasma Membrane and Homeostasis FLUID MOSAIC MODEL.
Cell Membranes are Selectively Permeable. What can pass? Water and other smaller molecules Water and other smaller molecules Gases like oxygen, carbon.
Cell Membrane. Cell membrane A gateway and a barrier for the cell. Controls what enters & exits A gateway and a barrier for the cell. Controls what enters.
