k Active transport Sodium-potassium pump its effects Other pumps: calcium pump, proton pump k Secondary active transport Membrane protein: pump+transporter Forms: symport antiport ck Exocytosis endocytosis Exocytosis: cell secretion Endocytosis: phagocytosis Receptor mediated endocytosis* Active transport Sodium-potassium pump & its effects Other pumps: calcium pump, proton pump * Secondary active transport Membrane protein: pump+transporter Forms: symport & antiport * Exocytosis & endocytosis Exocytosis: cell secretion Endocytosis: phagocytosis Receptor mediated endocytosis