* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Unit outline
Survey
Document related concepts
Cell culture wikipedia , lookup
Model lipid bilayer wikipedia , lookup
Cellular differentiation wikipedia , lookup
Extracellular matrix wikipedia , lookup
Cell growth wikipedia , lookup
Cell nucleus wikipedia , lookup
Action potential wikipedia , lookup
Lipid bilayer wikipedia , lookup
Cell encapsulation wikipedia , lookup
SNARE (protein) wikipedia , lookup
Membrane potential wikipedia , lookup
Signal transduction wikipedia , lookup
Organ-on-a-chip wikipedia , lookup
Cytokinesis wikipedia , lookup
Cell membrane wikipedia , lookup
Transcript
Lipids and Membranes Text sections 3.4 4.4 Test Date 11/2/16 chapter 5 all sections Brief outline I. II. III. IV. V. VI. VII. VIII. Lipids: Diverse Hydrophobic Molecules A. Fats store large amounts of energy B. Phospholipids are major components of cell membranes C. Steroids include cholesterol and certain hormones Cell Boundaries A. Cell Membrane B. Cell Wall Cell junctions Membrane structure A. Fluid mosaic model The Endomembrane System A. The endoplasmic reticulum manufactures membranes & performs many other biosynthetic functions B. The Golgi apparatus finishes, sorts, and ships cell products C. Lysosomes are digestive compartments D. Vacuoles have diverse functions Movement across the membrane A. A membrane's molecular organization results in selective permeability B. Passive transport is diffusion across the membrane C. Osmosis is the passive transport of water D. Cell survival depends on balancing water uptake and loss E. Proteins facilitate the passive transport of selected solutes F. Active transport pumps against the gradient G. Some ion pumps generate a voltage across membranes H. Cotransportation: a membrane protein couples the transport of one solute to another I. Exocytosis and endocytosis transport large molecules Cell Specialization A. Neurons B. Intestinal epithelial cells Cell signaling Lab: Diffusion and Osmosis / Water potential Objectives 1. Explain why there is an upper and lower limit to cell size. 2. Describe the structure and function of the plasma membrane 3. List the components of the endomembrane system, describe their structures and functions and summarize the relationships among them 4. Describe the types of vacuoles and explain how their functions differ 5. Describe the structure of intercellular junctions found in plant and animal cells and relate their structure to function 6. Describe the fluid properties of the cell membrane and explain how membrane fluidity is influenced by membrane composition 7. explain how hydrophobic interactions determine membrane structure and function 8. Explain how proteins are spatially arranged in the cell membrane and how they contribute to membrane function. 9. Describe factors that affect selective permeability of membranes 10. Define diffusion; explain what causes it and why it is a spontaneous process 11. Explain what regulates the rate of passive transport 12. Explain why a concentration gradient across a membrane represents potential energy 13. Define osmosis and predict the direction of water movement based upon differences in solute concentration and water potential 14. Be able to solve problems based on water potential 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. Describe how living cells with and without walls regulate water balance Describe one model for facilitated diffusion Explain how active transport differs from diffusion Explain what mechanisms can generate a membrane potential or electrochemical gradient. Explain how potential energy generated by transmembrane solute gradients can be harvested by the cell and used to transport substances across the membrane Explain how large molecules are transported across the membrane Give an example of receptor-mediated endocytosis Describe the structure of epithelial cells within the small intestine and relate their structure to their function Describe the structure of a neurons plasma membrane and relate the transmission of a neural impulse to the proteins found in that membrane Differentiate between local and long-distance signaling Describe how information is transferred during a. Reception b. Transduction c. Response