Week 8 Transport Mechanism PDF

TRANSPORT MECHANISM  LEARNING OUTCOMES Relate the structure and composition of the cell membrane to its function. Explain transport mechanisms in cell. Differentiate exocytosis from endocytosis. Organize cell structures and types according to the transport mechanims that involve the;...

TRANSPORT MECHANISM  LEARNING OUTCOMES Relate the structure and composition of the cell membrane to its function. Explain transport mechanisms in cell. Differentiate exocytosis from endocytosis. Organize cell structures and types according to the transport mechanims that involve the; and Examine real life scenarios and relate them to the process of transport mechanism. PUBLIC TRANSPORTATION TRANSPORT MECHANISM  TRANSPORT MECHANISM A REAL LIFE APPLICATION DRYING OF FOOD DETOXIFICATION OSMOSIS Relies on transport mechanism DRYING OF FOOD OSMOSIS  DETOXIFICATION Relies on transport mechanism  DIALYSIS THE TREATMENT THAT IS BASE ON TRANSPORT MECHANISM IN OUR KIDNEY  Serves as the boundary of between the cell’s the internal and external environment. Regulates all substances that enters and exit the cell.  Exhibits selectively permeability, which is why it is referred to as semi-permeable membrane.  STRUCTURE AND ORGANIZATION The main body of plasma membrane is composed of an amphipathic molecule known as phospholipid. Amphipathic – both hydrophobic and hydrophilic  STRUCTURE AND ORGANIZATION Additionally, because of its hydrophobic properties the tails form an internal layer. These factors cause the plasma membrane to be semi- permeable to certain substances. STRUCTURE OF THE PLASMA MEMEBRANE The plasma membrane is represented using a model known as FLUID MOSAIC STRUCTURE OF THE PLASMA MEMEBRANE The structures, which can be either be peripheral and integral, have specific function in the plasma membrane. The components of the plasma membrane can be divided into three:  TRANSMEMBRANE PROTEIN The are proteins that regulates the movement of the molecules across the membrane. These proteins forms the transport mechanism of the cell. They are composed of carriers, channels, and receptor proteins. CELL-SURFACE MARKERS These are responsible for the recognition of foreign and local (self) cells and tissues.  PROTEIN AND PROTEIN COMPLEXES RESPONSIBLE FOR THE MAJORITY OF INTERNAL AND EXTERNAL INTERACTIONS. THERE ARE SIX (6) CLASSES TRANSPORTERS CELL-SURFACE I.M Movement of molecules and solute Bind to each other for recognition across the membrane purposes. ENZYMES CELL TO CELL ADHESION Protein need by the cell for Bonds and junctions between cells. metabolic functions CELL-SURFACE RECEPTORS ATTACHMENT Detects chemical messages from the It maintain shape, stability, and environment to elicit reaction. coordinate chemical changes. CONTINUATION ON PART II