PPT-Plasma membrane and Cellular Transport

Plasma membranes Membranes cover the surface of every cell and also surround most organelles within cells They have a number of functions such as keeping all cellular components inside the cell. 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) . -. Gateway to the Cell. 2. Photograph of a Cell Membrane. 3. Cell Membrane. The cell membrane is . flexible. and allows a . unicellular. organism to . move. 4. Homeostasis. Balanced. internal condition of cells. 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). Movement of materials through a membrane . against a . concentration. gradient. and . requires . energy. from the cell. (. ATP. ). Low. Concentration .  . High. Concentration. Carrier proteins. Chapter 7. 7.1 Cell discovery and theory. The invention of the microscope led to the discovery of cells. .. microscope . Compound Light Microscope. Series of glass lenses. Uses visible light to produce a magnified image. Describe the cell membrane.. Does the above process use ATP?. Name the type of cellular transport being shown above.. Bell Ringer . Cellular Respiration. Why do we need oxygen, and what purpose do we need it for?. the transport both GABA into rat synaptosomes. They showed that DABA is competitive inhibitor inhibitor they showed that was par- tially inhibited They pointed out that but not but not rat cerebellum. 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—. 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.. The plasma membrane is a SELECTIVELY PERMEABLE membrane that allows nutrients and wastes to enter and exit the cell. Homeostasis: maintaining balance in the cell. The Plasma Membrane. Selective Permeability – allows some molecules to pass through and keeps others out. Where does the name “cell” come from?. “Cells” were named by Englishman Robert Hooke in 1665.. He observed that cork wood looked like monk’s cells in a monastery.. The Cell Theory. The cell is the basic unit of structure and function.. Students will describe the structure and function of cells, tissues, organs, and organ systems.. . Explain that cells take in nutrients in order to grow and divide and to make needed materials.. Relate cell structures (cell membrane, nucleus, cytoplasm, chloroplasts, mitochondria) to basic cell functions. . Intracellular Compartments: Endoplasmic Reticulum and Protein Sorting Golgi Apparatus and Intracellular Vesicular Traffic Assist. Prof. Dr. Pinar Tulay , Ph.D . Faculty of Medicine Department of Me 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. .