Review Watch the following video and write down

Review • Watch the following video and write down the organelles and transport systems that you recognize. Find at least 3 • “Inner Life of a Cell” • http: //www. studiodaily. com/main/technique/tprojects/6850. html

2. 3 Applications of Cellular Transport in Industry and Medicine

• Knowledge about the cell membrane has prompted industrial use of synthetics to mimic natural functions • This area is known as membrane technologies

Proteins • Recognition proteins are embedded in the cell membrane, but stick out into the cell’s surroundings • They allow cells to recognize one another

Proteins • Receptor proteins bind specifically with certain molecules to bring them into the cells by endocytosis • Viruses such as HIV use receptor proteins to target human cells • http: //www. youtube. com/watch? v=nh 18 Fvzj. Fn. Q

• https: //www. youtube. com/watch? v=PHp 6 i. YDi 9 ko

Synthetic Membrane Technology • Liposomes are fluid filled sacs surrounded by a phospholipid bilayer identical to the cell membrane in human cells • They are used to deliver drugs to infected areas of the body • Liposomes are used in gene therapy by injecting DNA into tumour cells

Transport of Protein Hormones • Insulin is a small protein produced in the pancreas • It is a hormone, meaning that it is secreted into the bloodstream and binds with membrane receptors • Specialized cells in the pancreas have channels that detect glucose in the bloodstream, this initiates the release of insulin • The binding of the insulin and glucose stimulates the rate of movement into the cells using facilitated diffusion.

Reverse Osmosis • Desalination is the process of removing salt from sea water in order to make it drinkable. • This process is known as reverse osmosis because the water moves from low water concentrations (high salt concentration) to a high water concentration (low salt concentration).

Reverse Osmosis • RO makes use of semi-permeable membranes that allow water to be forced through but filter out molecules or micro-organisms

Peritoneal Dialysis • Read section on page 286 and 287 on Peritoneal Dialysis • In groups of three (with people you are sitting by) work on Minds On… Simulating Peritoneal Dialysis • In the next class you will present this information

To Do • Answer questions 2 -6 on page 288