PPT-Osmosis Review The cell membrane separates the internal cell solution from the exterior

Solution Solution Cell Membrane consists of the lipid bilayer carbohydrates and proteins Water can pass right through lipid bilayer What is a solution A mixture of two or more substances. Prefixes, Suffixes, and Vocabulary. Diffusion . = the movement of particles from a high concentration to a low concentration. . Osmosis . = The diffusion of water. . . Hyper . = high, over. . . Hypo. Intermediate 2 Biology. Unit 1: Living Cells. Diffusion. Learning Objectives. Name the method by which substances move in and out of cells.. Define the term . ‘. diffusion. ’. State when diffusion will stop.. The Cell in its Environment. Ch 7, Section 2. L3 Biology. Molecules are always moving. Molecules move randomly and bump into each other and other barriers. Diffusion. Movement of molecules from an area of high concentration to an area of lower concentration . Homeostasis & Cellular Transport. Function of the Cell Membrane:. Cell membrane separates the components of a cell from . its . environment. —surrounds the cell. “Gatekeeper” of the cell—regulates the flow of materials into and out of cell—. Sec 4.3 . pg. 74-75. Osmosis. : . a . special case of diffusion . involving water. water . molecules . move across . a selectively permeable membrane from an area of high water concentration to an area of low water . Leaving Certificate Biology. Higher Level. Selective Permeability. Cell membranes are selectively permeable meaning they can control what enters and leaves the cell. Selective permeability is controlled by proteins embedded in the cell membrane. Molecules are always moving. Molecules move randomly and bump into each other and other barriers. Concentration gradient. Concentration Gradient - change in the concentration of a substance from one area to another.. (Chapter . 3) . Objectives:. 1- Define a cell and distinguish between cytosol and cytoplasm. . 2- Explain the structure and molecular organization of the cell membrane and list factors determining its selective permeability. . (Guyton, 12. th. Ed. (chapter 4): . pg. 45-56) . Dr. . Ayisha. . Qureshi. Assistant Professor, Physiology. Different types of transport across the cell membrane:. Permeability of a membrane. Anything that passes between a cell and the surrounding ECF must be able to pass through the plasma membrane. . WARNINGtherefore be burnt, placed in water, or kept in a lid-sealed metal container. ! Use WOCA Wood Quick to insure the surface is clean before any oil application.TECHNICAL DATAWOCA Exterior Wood Oi Kumar . Saha. Dept. of Zoology. Rajshahi. University. Physiology of Plasma membrane. :. The plasma membrane acts as a thin barrier which separates the intracellular fluid or the cytoplasm from extracellular fluid in which the cell live.. Phospholipids fluid sea in embedded with a wide variety of protein molecules.. Cell Membrane. The cell membrane is also known as:. Phospholipids bi-layer. Plasma membrane. Fluid mosaic membrane. What is a Solution?. primarily . of ______.. DNA. Protein. Carbohydrates. Phospholipids. 2. The . phospholipids in the cell membrane are arranged in a bilayer (double layer). How are the phospholipid molecules arranged in this bilayer?. Warm-Up. What do you know so far about the cell membrane?. What do you want to know about the cell membrane?. Cell Membrane Structure & Function. Phospholipid. Bi-layer . (hydrophilic heads, hydrophobic tails).