PPT-Plasma Membrane Dr. Ananda

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. -. 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. Plasma membrane, nucleus and ribosomes. Figure 4.7a. CYTOSKELETON:. NUCLEUS. ENDOPLASMIC RETICULUM (ER). Smooth ER. Rough ER. Flagellum. Centrosome. Microfilaments. Intermediate. filaments. Microvilli. Plasma membrane, nucleus and ribosomes. What to Know . The structure and function of the plasma membrane, nucleus and ribosomes.. Figure 4.5. 0.1 . . m. (a) TEM of a plasma. membrane. Outside of cell. 8 Lecture – pp 15-128. Lecture Presentations . for Integrated Biology and Skills for Success in Science. Banks, Montoya, Johns, & . Eveslage. Cells and Their Membranes . By the end of the lecture today, students will be able to:. 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. How was it discovered?. http://. ed.ted.com. /lessons/insights-into-cell-membranes-via-dish-detergent-ethan-perlstein#watch. The Plasma Membrane. What is the plasma membrane?. Flexible, sturdy barrier of the cell.. 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. 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. 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. Inclusion Body. Nucleoid. Mesosome. Cell Wall. Nucleus. Mitochondrion. Rough Endoplasmic Reticulum. Plasma Membrane. PROKARYOTIC CELL. Ribosome. Plasma Membrane. Inclusion Body. Nucleoid. Mesosome. Cell Wall. Presented by. Dr . Sanjoy. Deka. PLASMA MEMBRANE OR CELLMEMBRANE. Points to be discussed…. Nature of plasma membrane. Movement of substances across plasma membrane. Diffusion and osmosis. Hypotonic, isotonic and hypertonic solution. Module 1: Components a nd Architecture o f Cell Membrane Learning objectives: In this module, prime focus is mainly on the plasma membrane, however, majority of the concepts discussed below are also S.J. Singer and Garth L. Nicolson proposed the fluid mosaic model , which is widely used.. The fluid mosaic model of the plasma membrane structure describes the plasma membrane as a fluid combination of phospholipids, cholesterol, proteins, and carbohydrates..