ISB 202

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ISB 202
2010-04-08 09:02:36

Exam 3
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  1. What protease (protein that is an enzyme) is absent or found in only small amounts with many people who have cancer?
  2. Do viruses fit the definition of a living organism?
  3. Can a virus replicate itself?
    No. (needs a host cell)
  4. What is a benign tumor?
    uncontrolled cell division, no adverse affects (malignant has adverse affects)
  5. Are oncogenes "good"? why?
    No they are cancer
  6. What does the term "metastasized" mean?
    abnormal cells have migrated and there has been tissue invasion
  7. About 90% of all lung cancer is preventable.
    TRUE. (smoking)
  8. What does the term "carcinogen" mean?
    causes cancer
  9. What is the most common form of cancer in humans in the U.S.?
    skin cancer
  10. What can cause diseases AND cancer?
  11. Ultraviolet light can cause skin cancer by damaging the cells' DNA. What change occurs?
    bonds adjacent pairs of thymine
  12. What are three ways carcinogens get into humans?
    skin, inhalation, digestion
  13. What kind of cancer is very common in men, but never occurs in women?
  14. Can men get breast cancer?
  15. Smoking is responsible for about 30% of all cancers in the U.S.?
  16. Carcinogens are found in tiny amounts all around us, including many of our food.
  17. A fast growing "mole" on your skin should be check out immediately, especailly if it shows what four characteristics? (ABCD)
    Asymmetrical, Border irregularity, Color uneven, Diamter
  18. Bacteria are the oldest organisms on Earth. Did the archae or the urbacteria likely give rise to protistans, fungi, animals, and plants?
  19. About how fast do bacteria divide?
    20 minutes
  20. Can fungi kill bacteria? Can bacteria kill fungi?
    Yes. Yes.
  21. When told to take an antibiotic for 10 days why is it foolish to stop after 5 days?
    you only kill the weak bacteria, the strong bacteria build an immunity
  22. What shape is a coccus bacteria?
    round (sphere)
  23. what shape is a spirillium?
  24. what shape is a bacillus?
  25. Bacteria are diploid and get one chromosome from each parent?
    False. (virus don't have parents)
  26. As a group, bacteria have many diverse ways of getting nutrition for themselves?
  27. Bacteria are a problem mostly when they become a colony of millions.
  28. What are the two main types of structures that bacteria may have to help them move about?
    flagellum and cillia
  29. what are the major ways that antibiotics kill bacteria?
    stop cell wall formation during mitosis
  30. How many bacteria do some people have in their mouths?
    over 600
  31. what was the spirillum disease that Columbus took back to Europe?
  32. What were some of the crop plants that Columbus took from the Americas to Europe?
    maize and sugarcane
  33. What is one of the major diseases for which bacterial spores are stockpiled for use in biological warfare?
  34. Ruminant animals can actually manufacture theri own animo acids without any help.
  35. Scientific evidence suggest that which kingdom gave rise to plants, animals and fungi?
  36. Azospirillum bacteria cause syphilis?
    False. fixes nitrogen in corn
  37. Why do some farmers sprinkle bacteria onto their stored green silage?
    to speed up the process
  38. Photosynthesizing bacteria in oceans created most of the oxygen we breathe?
    True (70%)
  39. Being a very diverse group, many protistan organisms can tolerate arid conditions?
  40. Some protistas ingest food and some photosynthesize.
  41. Is an amoeba a plant of animal?
  42. The blue whale is the largest organism on Earth.
  43. Ocean kelp is the largest organism?
  44. _____ is the base of the food web of the sea.
  45. What is "pseudopodium"? What category of organisms may have these?
    false foot, protistas
  46. What was the name of the disease responsible for the great Irish famine of the 1840s?
    Phytopphthora infestans
  47. The organism that caused the Irish potato famine was a fungus?
    False. protista (does not have chitin)
  48. What is the name of the small, tube-liked threads on a fungus?
  49. What is a mycelium?
    a network of hyphae
  50. A lichen is made of fungus and what else?
    photo symbiot; usually algae
  51. yeast is a multi-celled organism
    false, single