physiology- cell and its function

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Anonymous
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159073
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physiology- cell and its function
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2012-06-17 10:34:53
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physio
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  1. This is the major principal fluid medium of the Cell?
    water
  2. Water is present in almost every cell in the body except?
    fat cells
  3. the concentration of water in the cell?
    70-85%
  4. where does chemical reaction take place? (2)
    dissolve chemicals and surface of suspended particles or memebrane
  5. this are different substances that make up the cell?
    protoplasm
  6. composition of protoplasm?
    water, electrolyte, protein, lipids, carbohydrates
  7. 2 major parts of the cell?
    Nucleus and cytoplasm
  8. the separating membrane of the nucleus and the cytoplam?
    nuclear memberane
  9. it provides inorganic chemical for chemical reaction?
    ION
  10. they are necessary for operation of some of the control mecanism?
    ion
  11. it compose the 10-20% of the cell?
    protein
  12. 2nd most abundant subtance in the cell?
    protein
  13. 2 types of protien?
    structural and functional
  14. this are polymers that forms long filaments?
    structural protien
  15. this forms the cytoskeleton of  cellular organelles?
    microtubules
  16. extracellularly, where are structural protein found?
    colagen and elastin fibers
  17. this is composed of combination of a few molecules in tubular-globular form?
    functional protein
  18. functional protien are what usually in cells?
    enzymes.
  19. mostly are adherent to membranoud structure inside the cell?
    functional protein
  20. 2% of the total cell mas?
    lipid
  21. this is also known as neutral fat?
    triglicerides
  22. this is the bodies main storehouse of energy giving nutrient?
    triglicerides/neutral fat
  23. this accounts to 95% of fat cells cell mass?
    triglicerides
  24. % of carbohydrate in total cell mass?
    1
  25. % of carbohydrate in muscle cell?
    3
  26. % of carbohydrate in liver cells?
    6
  27. it is always present in the surrounding extracellular fluid?
    glucose
  28. carbohydrates is almost always stored as?
    glycogen
  29. insoluble polymer of glucose that can be depolymerized and used rapidly to supply cells' energy need?
    glucose
  30. this envelopes the cell?
    cell membrane
  31. thin, PLIABLE, elastic struture?
    cell membrance
  32. how thick is a cell membrane?
    7.5-10 nano meter
  33. protein component of cell membrane? (%)
    55
  34. phospholipid  component of cell membrane? (%)
    25
  35. cholesterol  component of cell membrane? (%)
    13
  36. lipids  component of cell membrane? (%)
    4
  37. carbohydrate  component of cell membrane? (%)
    3
  38. thin, double-layered film of lipids?
    lipid bilayer
  39. these may serve as receptor for water soluble chemicals?
    internal memberane
  40. this acts as secondary messengers?
    receptor + protiesn
  41. this are often atteched to the integral protein?
    peripheral protein
  42. this function almost entirely as enzymes or as controllers of transport of substances through the cell membrane pores?
    peripheral protein
  43. fluid portion of cytoplasm?
    cytosol
  44. contains dissolved protein, electrolytes and glucose?
    cytosol
  45. the loose carbohydrate coat of the cell?
    glycocalyx
  46. cell charge of most cells?
    negative
  47. a network of tubular and flat vesicle structure in the cytoplasm?
    endoplasmic reticulum
  48. this are well developed in the cells that secrets and produce protein?
    ER
  49. composed of micture of RNS and protein which synthesize new proteins?
    ribisomes
  50. site of translation of mRNA and postranslation modification of proteins that are destined to be secreted that are destined to be secreted from the cell?
    RER
  51. site where many substances are detoxified?
    SER
  52. sarcoplamic reticulum is found in?
    skeletal and cardiac muscle
  53. sequesters Ca++ for muscel contraction?
    SER
  54. composed of four or more layers stacked layers of thin flat, enclosed vesicles lying near one side of the nucleus?
    golgi aparatus
  55. prominent in secretory cells?
    golgi aparatus
  56.  this provides enzymes that control glycogen breakdown?
    ER
  57. 250-750nm in diameter
    lysozomes
  58. PH of the acidic interior of the lysosomes
    • 4.5`
    •  
  59. this is the process where intracellular organelles of the cell are degraded?
    autophagy
  60. physically similar to lysozomes?
    perxizomes
  61. formed by self replication?
    peroxisomes
  62. they contain oxidases?
    peroxisomes
  63. pancreatic acinar cells are examples of what?
    secretory vesicles
  64. a high energy substance?
    adenosine triphosphate
  65. currently thought that they evolved from an aerobic prokaryote that lived within primitive prokaryote cells?
    mitochondria
  66. providing rigid physical structure?
    cytoskeleton
  67. examples are actin and myosion?
    cytoskeleton
  68. this are critical in contraction?
    actin filaments
  69. this are the core of microvilli
    actin filaments
  70. links interior of the cell to the extracellular matrix through desmosomes and hemidesmososmes?
    intermediate filaments
  71. important in chromosome movement during mitosis?
    microtubule
  72. away?
    kinesin
  73. towards
    dynein
  74. this prevents polymerization of the tubulin dimers?
    vincristine
  75. 6 function of plasma membrane?
    • selective transport
    • cell recognition
    • cell communication
    • tissue organization
    • enzymatic activity
    • determination of cell shape 
  76. size of eukaryotic plasma membrane?
    5nm
  77. how many aquaporins have been identified?
    12
  78. found in excitatory cells
    ion channels
  79. depends on the direction ions moving?
     
    conductance

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