microbiology part 2

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microbiology part 2
2010-10-18 04:11:01
microbiology test

microbiology 2nd set
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  1. caused by yersinia pestis, and is the natural vector for this plague is the _____ ______. know as the ________ plague
    rat flea, bubonic
  2. ___________ plague can band transfered from rat flea bite, handling dead infected rats (animal) or airborne
  3. bubonic plague gorws in the ______ ______ causing necrosis of these in the groin and arm pits.
    lymph nodes
  4. if this plague can get into your lungs and cause pneumonic plague
    bubonic plague
  5. _________ is calsed by vibrio __________ and is transmitted orally from contaminated food or water.
    Cholera, cholerae
  6. severe diarrea (up to four gallons a day of fluid)
    if not treated could cause shock, collapse and death. these are symptoms of ________.
    based on this what treatment is essential to to treat patients that contract this.

    fluid and electrolyte replacement.
  7. tuberculosis is caused by ________ tuberculosis
  8. _______ is caused by mycobacterium leprae.
  9. m leprae is an ________ intracellular parasite.
    obligate. this means it can not reproduce outside of its hosts cell
  10. ___________ is caused by a virus called variola virus.
    Small pox
  11. flue is one of the serious viral disease caused by ________ viruses
  12. aids is one of the most recent viral diseases caused by _____________
    HIV human immunodeviciency virus
  13. vaccines are prepared in____________ ________ for the specific strains expected each year (information is gathered from china tawian and japan
    embryonated eggs
  14. semi rigid porous complex structure is a description of the _________ cell wall
  15. ________ _______ is to maintain the bacterial cell shape to form
    cell wall
  16. ______ _____ protects bacterial cells from bursting when water enters the cell by osmosis
    cell wall
  17. the _________ _________ protects the bacterial cell contents from adverse enviromental changes.
    Cell wall
  18. ____________ is made of two carbohydrate (CHO) sugars and is a major component of the bacteral cell walls.
  19. n- ___________ (NAG) and N- ______________ acid (NAM)is one of the two carbohydrates CHO sugars that form the petidoglycan (major compent of bacterial walls)
    • N - acetylglucosamine (nag)
    • N- acetylmuarmic acid (nam)
  20. NAG and NAM are cross linked by the 4 amino acid tetra peptides chains.
  21. ____________ gives bacteria strong support and prevents bacterial cells from bursting.
  22. penicillin acts on the peptidoglycan layer, therefore it is more effective on gram ________ bacteria
  23. based on their cell wall bacteria are divided into two catagories
    • 1 gram positive G+
    • 2. gram negative G-
  24. gram ________ bacteria has a thick peptidoglycan layer ( __ % to ___% of cell wall) but does not have an outer __________ membrane

    60- 90

    phospholipid membrane
  25. gram _______ bacteria contain ________ acids (regulate ionic movement, prevent autolysis and involved in growth) and liptoechoic acids.
    • positive
    • techoic acid
  26. gram positive bacteria contain techoic acids (regulate ionic movement,prevent autolysis and involved in growth) and liptoechoic acids. the wall gets its _________ charges from these molecules
  27. the peptidoglycan layer is tightly pressed agains the cell memebrane thus the _________ __________ is narrow.
    periplasmic membrane
  28. gram __________ bacteria has a thin peptidoglycan layer ( 10% - 20% of cell wall.)
  29. gram negative have an outer and inner layer membrane made of ____________ bi layer and a thin peptidoglycan layer in between.
  30. grame negative bacterial have a wide ____________ space between the peptidooglycan and cell membane which contains enzymes and binding proteins responsible for cell _________ and _________.
  31. periplasmic space.
    transport and toxins
  32. the phospholipid bi layer _____ or ______ substances entering the cell, thus acts as a ____________
    • stops or slows
    • barrier
  33. gram _________ bacteria has _____________ (LPS) which act as anti phagocitic and anti cell ruputre molecules.
    • negative
    • lipopolysaccharides
  34. lipid a
    CHO side chains

    are the three parts of _____________
    lipopolysaccharides (LPS)
  35. Lipid A is the _____ part of LPS (lipopolysac...)
  36. the toxic part of of LPS ________ __ causes fever, pain, damage to blood vessels and endotoxic shock as a result of the decrease in blood pressure.
    lipid a
  37. _____-______ organisms as mycobacteria and nocardia contain peptidoglycan and mycolic acid (_____ lipids) in their cell walls.
    • acid fast
    • unique
  38. __________ have no peptidoglycan in their cell wall. their cell wall is made of polysaccharides and/or _________
    • archabacteria
    • proteins
  39. mycoplasmas is an exception because it lacks ____ ______
    cell walls
  40. _ -Forms or L-phase varients are mutant bacteria with a defective cell walls induced by ________ treatment (eg lysoyme)
    • K
    • chemical
  41. the cell wall has carrier (channel) _________ that protrude to the outside the membrane of the cell and transports in and out of the cell
  42. other membrane proteins imbedded on the cell _______ in the outer or inner layer (eg eyzymes)
  43. the _______ __________ functions to regulate transport of nutrients and cell wastes
    cell membrane
  44. the cell membrane is involved in _______ and metabolic activites.
  45. the 3 falgellum parts:
    the ___________
    the _____
    the ______ _______
    • filament
    • hook
    • basal body
  46. the________ ______is the part that anchors the fagellum to the cell membrane
    (1 of the 3 flaguellum parts)
    basal body
  47. ________ has a wide base (made of different protein_ where the filament is attached.
    (1 of the 3 flaguellum parts)
    the hook
  48. the ________ part that anchors the flagellum to the cell membrane
    (1 of the 3 flaguellum parts)
    basal body
  49. flagella are structures that bacteria use for movement. they very both in __________ and __________
    number and arrangment
  50. _______ is a single flagellum at 1 end of the bacterium
    monotrichous (HINT - mono is 1)
  51. __________a single flagellum on each side of the bacterium
  52. ________ - several flagella on one side of the bacterium
    lophotrichous (lots on one side, like LOP -this would make it LOP sided)
  53. __________ several flagella dispersed all over the bacterial cell.
    peritrichous (P for PLUNTIFULY!)