PPT-5.Transport , Endocytosis,

and Phagocytosis Undergraduate Graduate Histology Lecture Series Larry Johnson Professor Veterinary Integrative Biosciences Texas AampM University College Station TX 77843 VIBS 443 and VIBS 602 . Diffusion. : The passive movement of particles from a region of high concentration to a region of low concentration until equilibrium is reached. (Molecules still move after equilibrium is reached) . Diffusion. : The passive movement of particles from a region of high concentration to a region of low concentration until equilibrium is reached. (Molecules still move after equilibrium is reached) . & . Exocytosis. . By : Matt Sargeant. What is . Endocytosis. and . Exocytosis. ?. Endocytosis. is a process by which cells absorb molecules (such as proteins) by engulfing them. It is used by all cells of the body because most substances important to them are large polar molecules that cannot pass through the hydrophobic plasma or cell membrane.. Active . transport . (30). Active Transport book (20). 08. . Oct. . . . . M. Today’ objectives:. . Students will develop a book that will discuss 3 types of active transport. . Active transport book. by . Vani. Gupta. Types of cell membrane transport. Factors affecting transport. . Cell membrane. Chemical gradient. Electrical gradient. Rate of transport. . Passive transport. เซลล์ต่างๆ ในร่างกายเรา ต้องการรักษาดุลยภาพ โดยการควบคุมการผ่านเข้า-ออกของสารระหว่างเซลล์. Endocytosis, and Exocytosis. Section 3.5. 1. Objectives. SWBAT describe active transport.. SWBAT distinguish among endocytosis, exocytosis, and phagocytosis. . Main Ideas. Proteins can transport materials against a concentration gradient.. Bulk transport refers to the transport of solutes enclosed in vesicles. Many of these solutes are too large to diffuse across the membrane or be transported across it by carriers or by pumps.. These vesicles originate from the ER, the Golgi or from the plasma membrane. They move along tracks formed by microtubules and are pushed along these tracts by motor proteins, . CONCEPT 5.5: Bulk transport across the plasma membrane occurs by exocytosis and endocytosis. Small solutes and water enter or leave the cell through the lipid bilayer or by means of transport proteins. Roles of Biological Membranes. The Lipid Bilayer and the Fluid Mosaic Model. Transport and Transfer Across Cell Membranes. Specialized contacts (junctions) between cells. What are the major roles of biological membranes?. Osmosis vs. . Endocytosis . and . Exocytosis. . Doctor Osmosis: Controller of all of the transporter proteins. Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of greater concentration of water to an area of lesser concentration of water. . Chapter 3. Cell Membrane. Selectively permeable: allows . some. things to enter and leave. . Cell Membrane. Made of phospholipid bilayer. Cell Membrane. Made of a series of proteins.. https://www.youtube.com/watch?v=moPJkCbKjBs. Endocytosis . process of capturing a substance or particle from outside the cell by engulfing it with the cell membrane. Pinocytosis . (cellular drinking): occurs when the plasma membrane folds inward to form a channel allowing dissolved substances to enter the cell. UNIT-I. Anil Gattani, Ajeet Kumar. Molecules Related to Cell Permeability. Depends on . Molecules size (electrolytes more permeable). Polarity (hydrophillic). Charge (anion . vs. . cation). Water . vs.