bio 130 chpt 3

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lcunrod7
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234875
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bio 130 chpt 3
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2013-09-14 22:32:34
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  1. cell membrane; separates cell contents from extracellular fluid
    plasma membrane
  2. material between cell membrane and nuclear membrane; colloid containing many proteins
    cytoplasm
  3. subdivision of cytoplasm known as intacellular fluid
    cytosol
  4. subdivision of cytoplasm known as "little organs" intracellular structures with specific functions
    organelles
  5. not completely enclosed by membranes indirect contact with cytosol
    nonmembraneous
  6. what are the 5 nonmembraneous organelles
    cytoskeleton, microvilli, centrioles, cilia, ribosomes
  7. enclosed in a phospholipid membrane isolated from cytosol
    membranous
  8. what are the 6 membraneous organelles
    mitochondria, nucleus, endoplasmic reticulum, golgi apparatus, lysosomes, peroxisomes
  9. structure: membrane extensions containing microfilaments
    function: increase surface area for absorption
    microvilli
  10. organizing center containing pair of centrioles
    centrosome
  11. structure: fine protein filaments or tubes
    function: strength and support, intracellular movement of structures and materials
    cytocskeleton
  12. structure: RNA and proteins; fixed: attached to endoplasmic reticulum; free: scattered in cytoplasm; 
    function:protein synthesis
    ribosomes
  13. structure: vesicles containing degradative enzymes
    function: catabolism of fats/ other organic compounds, neutralization of toxic compounds
    perioxisome
  14. structure: vesicles containing digestive enzymes
    function: removal of damaged organelles or pathogens
    lysosome
  15. structure: stacks of flattened membranes (cisternae) containing chambers
    function:storage, aleration, and packaging of synthesized products
    golgi apparatus
  16. structure: double membrane inner member contains metabolic enzymes 
    function: production of 95% of cellular ATP
    power house of cell
    mitochondria
  17. structure: fluid nucleoplasm containing enzymes, proteins, DNA, and nucleotides; surrounded by double membrane
    function: control of metabolism, storage/processing of genetic information; control of protein synthesis
    controlling center of cell
    nucleus
  18. structure: membranous sheets and channels 
    function: synthesis of secretory products, storage, and transport
    endoplasmic reticulum
  19. no attached ribosomes, synthesizes lipids and carbohydrates
    smooth er
  20. attached ribosomes, modifies/packages newly synthesized proteins
    rough er
  21. selectively permeable that controls entry of ions and nutrients, elimination of wastes, release of secretions
    plasma membrane
  22. superficial membrane carbohydrates; components of complex molecules
    glycocalyx
  23. carbohydrates with protein attached
    proteoglycans
  24. protein with carbohydrates attached
    glycoproteins
  25. lipids with carbohydrates attached
    glycolipids
  26. cell recognition, binding to extracellular structures, lubrication of cell surface
    glycocalyx
  27. part of cell membrane, cannot be removed without damaging cell, often span entire cell membrane, can transport water or solutes (transmembrane proteins)
    integral proteins
  28. attached to cell membrane surface, removable, fewer than integral proteins
    peripheral proteins
  29. mostly comprised of phospholipid molecules in two layers, isolate cytoplasm from extracellular fluid
    phospholipid bayer
  30. hydrophilic heads at membrane surface, hydrophobic tails on the inside
    phospholipid bayer
  31. physical isolation, regulation of exchange with external enviornment, sensitivity to environment, structural support, lipid bayer provides isolation, proteins perform most other functions
    plasma membrane
  32. 6nm in diameter, typically composed of cell, commonly at periphery of cell
    microfilaments
  33. finger-shaped extensions of cell membrane, has core of of microfilaments to stiffen and anchor, enhance surface area of cell for absorption
    microvilli
  34. layer inside plasma membrane in cells forming a layer or lining
    terminal web
  35. 7-11nm in diameter, strongest and most durable cytoskeleton elements
    intermediate filaments
  36. 25nm in diameter, largest components of cytoskeleton, extend outward from centrosome (near nuclues)
    microtubules

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