MOD 16 ACTIVE TRANSPORT

• Active transport movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration
• Active transport requires assistance of a type protein called carrier protein, using energy supplied by Adenosine Triphosphate to affect transport.
• Active transport is the process by which dissolved molecules move across a cell membrane from lower to higher concentration
• There is low concentration of Na and it moved outside by protein powered by ATP spending one phosphate and it becomes ADP, as the Na were moved outside
• K from low concentration is moved inside and the phosphate returned back to the cell
• Glucose simplest sugar being used by the braincells for its function.
• Sodium is used to balance tge water level in the body
• Amino acids are protein base, necessary for growth and repair of tissues
• Potassium needed for effective muscle function especially the heart, without this active transport, there will be lots of problems in the body
• Large molecules are loaded into small membrane-wrapped containers called Vesicles
• Vesicular transport predominant mechanism for exchange of proteins and lipids between membrane bound organelles in eukaryotic cell.
• Endocytosis is the case when a molecule causes the cell membrane to bulge inward, forming a vesicle
• Phagocytosis type of endocytosis where an entire cell is engulfed
• Pinocytosis when the external fluid is engulfed
• Receptor mediated endocytosis occurs when the material to be transported binds to certain specific molecule in the membrane
• Endocytosis process of capturing a substance or particle from outside the cell by engulfing it with the cell membrane.
• Phagocytosis when dissolved materials enter the cell
• Pinocytosis plasma membrane folds inward to form a channel allowing dissolved substances to enter cell
• Exocytosis process of vesicles fusing with plasma membrane and releasing their contents to the outside of the cell