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Moving Cellular Materials
Cell Membranes Selectively permeableAllow only some things to enter and leave.
Passive Transport Movement of material through the membrane without using energy.
Types of Passive TransportDiffusion Random movement of particles from areas of more to areas of less. Equilibrium – equal particles in each area.
Types of Passive TransportOsmosis The diffusion of water through the cell membrane. Example: Plants
Types of Passive TransportFacilitated Diffusion Movement of materials through a transport protein located in the membrane.
Active Transport Moving materials through a cell membrane with the use of energy. Requires transport proteins.
Movement of Very Large ParticlesEndocytosis Cell membrane surrounds the particle. Section of the membrane pinches off to form a vesicle.
Movement of Very Large ParticlesExocytosis Opposite process as endocytosis. Contents of the vesicle are released outside the membrane.
CELL PROCESSES What keeps them alive?.
Cells and Their Environment
Maintaining Cellular Homeostasis How do organisms regulate their body’s internal environment?
Cellular Transport Figure 6-12 Both diffusion and facilitated diffusion are forms of passive transport, as neither process requires the cell to expend.
Chapter 3 Section 2 Moving Cellular Materials. Passive Transport Why do we have screens on our windows at home? A cell has a membrane that works just.
Moving Cellular Materials Chapter 3 Notes. Cell Membrane Controls what moves into and out of cells. Controls what moves into and out of cells. Membrane.
Section Objectives Explain how the processes of diffusion, passive transport, and active transport occur and why they are important to cells. Predict.
Diffusion and Osmosis.
How do things move in and out of cells?
Chapter 4 Notes Cell Physiology Biology Hamilton Science Department.
Moving Cellular Materials Pg
Structure and Function
Plant and Animal Cell Structures
Chapter: Cell Processes
Passive and Active Transport
A “thin skin” that regulates what can enter and leave the cell.
Active and Passive Transport. Passive Transport Movement of substance through the cell membrane without the input of energy Three types – Diffusion –
Unit 6 Cell Transport Part 2. Facilitated Diffusion Carrier protein in the cell membrane is needed to help move a specific molecule across Facilitated.
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