Active and Passive Transport Chapter 9 Essential Questions

Active and Passive Transport Chapter 9

Essential Questions 1. How do materials travel in and out of the cell? 2. Compare types of active and passive transport. Vocabulary Selectively Permeable Membrane- a membrane that allows only certain materials to pass through it. Carrier Proteins- proteins in the cell membrane that allow materials to pass through the membrane.

How does the cell membrane control the materials that move in and out of the cell? Passive Transport The movement of materials through the membrane without using cellular energy. Active Transport The movement of materials through the cell membrane using cellular energy called ATP. (adenosine triphosphate)

What are two examples of Passive Transport? Diffusion The process in which molecules move through the cell membrane from an area of high concentration to an area of low concentration. Osmosis The process in which water molecules moves through the cell membrane from an area of high concentration to an area of low concentration.

Diffusion

Osmosis What do you see happening in this animation?

What are examples on active transport? 1. Transport proteins The use of transport proteins in the cell act as gatekeepers moving materials in and out of the cell. Example. Sodium Pump 2. Phagocytosis The process in which the cell membrane surrounds the material and engulf it.

Transport Proteins

Phagocytosis These microbes are eating the orange “food”. http: //www. biologie. unihamburg. de/bonline/d 27_10/gerisch 4. avi

Membrane Transport Clips/Animations http: //www. northland. cc. mn. us/biology 1111/animations/passive 1. swf http: //i-biology. net/2007/09/24/amoeba-feeding-endocytosis/

Summary n Draw a Venn diagram comparing active and passive transport. n n n Include the two types of passive transport and the two types of active transport. Describe each type of transport Include at least one similarity.