Presentation on theme: "Cells and Their Environment"— Presentation transcript:
1Cells and Their Environment Objectives:1. Relate concentration gradients, diffusion, and equilibrium.Describe the importance of ion channels in passive transportIdentify the role of carrier proteins in facilitated diffusion
2Passive TransportPassive Transport: is movement across the cell membrane that does not require energy form the cell. Particles move along their concentration gradient. Does not require energy.
3Concentration Gradient and Equilibrium Concentration Gradient: A difference in the concentration of a substance across a space.Equilibrium: is a condition in which the concentration of a substance is equal throughout a space.