PPT-TRANSPORT ACROSS CELL MEMBRANE-ii

Guyton 12 th Ed chapter 4 pg 4556 Dr Ayisha Qureshi Assistant Professor Physiology ACTIVE TRANSPORT Definition Active transport is a carriermediated transport wherein . Learning Outcomes. explain what is meant by . passive transport . (diffusion and facilitated diffusion including the role of membrane proteins), . active transport. , . endocytosis . and . exocytosis;. and Transport. Cell Membrane. Cell membrane- also called the . Plasma Membrane. Separates the cell from its surrounding . environment.  . Helps maintain homeostasis which is keeping the internal conditions constant. 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.. Group 2- Cell Development. Gladys Alexandre, Cristina Calestani, John Koontz, Silvia Moreno, Brian Ring, William Said. Context: Principles of Biology I (BIOL 1107); >250 students (freshman level). 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. 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—. Active Transport. . النقل النشط. 2. Some facilitated transport proteins can move solutes against their concentration gradient, from the side where they are . less concentrated. to the side where they are . The Nucleus: the gene-containing control center of the cell.. The nucleus is bound by a double membrane called the . nuclear envelope. . . Inside the nucleus are one or more small, dark-staining, essentially round structures called . HONORS BIOLOGY. 1. What . cell organelles/structures. are involved with protein production, packaging, transporting, and excretion from the cell?. Nucleus → rough endoplasmic reticulum . → Golgi apparatus → vesicle → cell membrane. (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. . What is the plasma membrane?. A flexible boundary between the cell and its environment which maintains . HOMEOSTASIS. within the cell. **Remember that . HOMEOSTASIS. is a state of balance/equilibrium within the cell.. 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). 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. .