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Active Transport Mechanisms Primary active transport Secondary active transport Vesicular transport.

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Presentation on theme: "Active Transport Mechanisms Primary active transport Secondary active transport Vesicular transport."— Presentation transcript:

1 Active Transport Mechanisms Primary active transport Secondary active transport Vesicular transport

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3 Types of Pumps Na+/K+ pump H+ pump H+/K+ pump Ca++ pump

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6 Phosphorylation & dephosphorylation

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8 Types of Pumps Na+/K+ pump H+ pump H+/K+ pump Ca++ pump

9 The importance of pumps for cell functions

10 Secondary Active Transport

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12 -Co-transport -Counter transport

13 Vesicular Transport

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15 Formation of vesicles at ER

16 Endocytosis

17 Phagocytosis

18 Receptor mediated endcytosis

19 Exocytosis

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21 Control of Exocytosis

22 Transcytosis

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24 Summary of Lectures -Homeostasis -Control of body functions by feed-back mechanisms to keep homeostasis -Functions of Cell organells (ER, Golgi complex, Mitochondria, Lisosomes) -Cytoskeletal structures and Functions:

25 - Membrane structure and function of lipids of plasma membrane including phospholipids, cholesterol and PIP2) -Functions of Protein structures (including channels, Carriers, receptors, Pumps, enzymes, cell markers, G proteins, adhesion molecules) -Activation of chemical gated channels Plasma membrane

26 -Simple diffusion: transport through lipid bilayer, transport through channels, Ficks law of diffusion. -Facilitated diffusion: by carriers Differences in diffusion Kinetics between the previous modalities Equivalent Concentration of particles. Transport through plasma membranes Passive transport modalities

27 -Osmosis: concept of osmotic pressure (Van’t Hoff’s law), Oncotic (Colloid-osmotic) pressure.Osmolarity, osmolality Hydrostatic pressure Transport through plasma membranes Passive transport modalities

28 - Primary active transport (ATP-ase carriers or Pumps) (functions of pumps: Na+/K+ pump, Ca++ pump, H+ pump, H+/K+ pump). - Secondary active transport (Na+ dependent carriers) examples Transport through plasma membranes Active transport modalities

29 - Vesicular transport: endocytosis, phagocytosis, transcytosis, pinocytosis and exocytosis and its control in secretory cells.- Transport through plasma membranes Active transport modalities


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