biology chapter 2 test

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emilyyx14
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45728
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biology chapter 2 test
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2010-10-28 16:03:54
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biology
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  1. what are three types of symbiosis
    • mutualism
    • communalism
    • parasitism
  2. define abiotic and biotic
    • abiotic: non living
    • biotic: living
  3. predation is
    the hunting and killing of an organism by another organism
  4. the biosphere is
    the total world of life extending several kilometers into the atmosphere and several kilometers into the ocean
  5. levels of organization smallest to largest
    atoms & molecules, cells, tissues, organs, organ system, organism, population, community, biome, biosphere
  6. define ecology
    the study of organisms interacting with other organisms and their enviornment
  7. niche
    the role the organism has within a habitat
  8. a niche includes an organisms need for
    food, shelter, and reproduction
  9. species interact through
    competition, predation, symbiotic relationships
  10. a symbiotic relationship in which one organism benefits at the expense of another organism
    parasitism
  11. a symbiotic relationship in which one organism that benefits and the other organism is neither helped nor harmed
    commenalism
  12. a symbiotic relationship in which 2 or more organisms that live closely together and benefit from each other
    mutualism
  13. most all organisms get their food by eating other organisms
    predation
  14. energy
    the ability to do work
  15. energy =
    movement, digestion, breathing, homeostasis, and metabolism
  16. autotrophs
    create their own energy, "self feeders"
  17. heterotrophs
    "other feeders" get their energy from other places
  18. photosynthesis
    making energy from the sun
  19. chemosynthesis
    formation of energy through chemicals
  20. herbivore
    plant eater
  21. carnivore
    meat eater
  22. omnivore
    meat and plant eaters
  23. detritovore
    dead organisms eater
  24. each step in a food web or chain is called a
    trophic level
  25. each level of the food web or chain gets its energy from
    the previous level
  26. name the producers in order
    • primary producer
    • primary consumer
    • secondary consumer
    • third level consumer
  27. food chain
    a simple model that shows how energy flows through an ecosystem
  28. food web
    more complex feeding relationships
  29. ecological pyramid
    used to show how much energy flows through an ecosystem
  30. every energy trophic level only brings ____ % with them to the next level
    10
  31. name each ecological pyramid
    • energy,
    • number
    • biomass
  32. biomass=
    living weight
  33. matter can not
    be created nor destroyed
  34. matter cycles _____ be reused
    and energy levels ______ be reused
    • matter= can
    • energy = not
  35. biological
    living process
  36. geological
    nonliving process
  37. chemical
    interaction process
  38. ____% of the world is water
    72
  39. plants use photosynthesis by
    using carbon and releasing oxygen
  40. plants take in _____
    and breathe out ____
    people take in ______
    and breathe out ______
    • carbon
    • oxygen
    • oxygen
    • carbon
  41. all organic compounds contain
    carbon
  42. process that puts oxygen/ carbon back into atmosphere
    decomposition
  43. long term carbon and oxygen levels
    • fossil fuels
    • carbon- released when burned
  44. important element in the protein your body makes
    nitrogen
  45. ___% of the atmosphere is nitrogen
    78
  46. _____ is not a useable form
    nitrogen
  47. what is nitrogen fixation
    only way to turn nitrogen into a useable form. where bacteria in soil is converted
  48. _____ can change nitrogen into a usable form
    lightning
  49. the only way we can get nitrogen into our body is by
    eating the plants that take in nitrogen
  50. phosphorous is
    important for growth and development of organisms
  51. ____ never enters the atmosphere
    phosphorous
  52. describe short term phosphorous cycle
    • phosphorous is found in soil.
    • used by plants.
    • animals eat the plants.
    • returned to the soil when animal dies
  53. describe long term phosphorous cycle
    • soil erodes and takes a long time.
    • released in aquatic environment
    • underwater animals eat underwater plants
    • above water organisms eat under water animals
    • then they die and decay back into soil

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