PPT-Cell Membrane Permeability

Group 2 Cell Development Gladys Alexandre Cristina Calestani John Koontz Silvia Moreno Brian Ring William Said Context Principles of Biology I BIOL 1107 gt250 students freshman level. Learning Objectives. outline the roles of membranes within cells and at the surface of cells. state that plasma (cell surface) membranes are partially permeable barriers. describe, with the aid of diagrams, the fluid mosaic model of membrane structure. . By Dr. . Vani. Gupta. 2. “Polarity” . of the . membrane. Na. +. K. +. Mg. 2+. Ca. 2+. H. +. HCO. 3. -. Cl. -. SO. 4. 2-. PO. 3. -. protein. inside. (in mM). 14. 140. 0.5. 10. -4. (pH 7.2). 10. by . Vani. Gupta. Types of cell membrane transport. Factors affecting transport. . Cell membrane. Chemical gradient. Electrical gradient. Rate of transport. . Passive transport. leticia.leon@ferroxcube.com. February. 2011. High permeability materials evolution. What is improved?. What is new in 3E10 & 3E12? . 3E10. 3E12. Standard range in 3E10 &3E12. Applications. action . potential. Prepare: . Bring voltmeter and batteries. Nice 3D visualization of neurons: . https://youtu.be/Zqtng0AfHFY. Electric eel video: . http://www.cnn.com/videos/us/2016/06/07/electric-eel-discovery-vanderbilt-university-vstan-orig-bpb.cnn. Cell Membrane and Cell Wall:. . ALL. . cells have a . cell membrane. made of . proteins. and . lipids. . Cell Membrane. lipid bilayer. protein channel. protein . pump. Layer 1. Layer 2. SOME. cells have cell membranes . Cell Membrane and Cell Wall:. . ALL. . cells have a . cell membrane. made of . proteins. and . lipids. . Cell Membrane. lipid bilayer. protein channel. protein . pump. Layer 1. Layer 2. SOME. cells have cell membranes . Cell Membrane. .. The cell membrane . Controls. what comes out and . in of the cell. . It also provides protection.. The composition is a double layered sheet called a . Bi-lipid layer. .. This lipid bi-layer is made up of two . Learning . Goal . Describe . the composition and function of the lipid bilayer in cell membranes.. Cell Membranes. Cell membranes. . are semipermeable so that nutrients can enter the cell and waste products can leave.. All text comes from:. Membrane Function Part 1, . by W.R. Healy, K.N. Prestwich, and J. . Rymer. . © 2010. What is a model?. Models are . conceptual representations used to explain and predict phenomena. . Structure. Main component is phospholipids that are arranged in a double layer (. bilayer. ). Has scattered proteins within the phospholipids. Regulate what enters/leaves cell. Function . Nucleus. Structure. Adan Sanchez, MD. The . stomach has a controlling power upon the health of the entire body.. —Anything . which is taken into the stomach and converted into blood becomes a part of the being.. —. Natural Physiologic Barrier. organelles. . .  . A. The cell membrane provides . protection. and support for the . . cell. . Animal . cells . do not have a cell wall, therefore, the cell . membrane . must provide . Lec3/cytology . 2021-2022. By: . MSc. . Farah E. . Ismaeel. Objectives of this lecture. Learn about . . cell . membrane . permeability. . . Learn . about . the ways of molecules transport via cell membrane. .