Science Test

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KaZuma_t3
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175938
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Science Test
Updated:
2012-10-08 22:47:04
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Science
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Science
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  1. the relationship between species and abiotic factors in an ecosystem
    a. ecosystem
    b. photosynthesis
    c. food chain
    ecosystem
  2. an organism that uses the sun's energy to make its own food
    a. consumer
    b. producer
    c. decomposer
    producer
  3. the ability of producers to make their own food
    a. ecosystem
    b. bioamplification
    c. photosynthesis
    photosynthesis
  4. what is the formula for photosynthesis
    energy + carbon dioxide + water -> glucose + oxygen
  5. the opposite reaction to photosynthesis, converting oxygen into carbon dioxide, water and energy
    a. cellular respiration
    b. bioamplification
    c. denitrification
    cellular respiration
  6. what is the formula for cellular respiration
    glucose + oxygen -> energy + water + carbon dioxide
  7. animals that consume other animals for energy
    a. producer
    b. consumer
    c. carnivore
    consumer
  8. organisms that recycle dead or decaying matter back into usable components
    a. consumer
    b. producer
    c. decomposer
    decomposer
  9. an animal that feeds on other animals
    a. carnivore
    b. herbivore
    c. omnivore
    carnivore
  10. an animal that eats plants
    a. carnivore
    b. herbivore
    c. omnivore
    herbivore
  11. an animal that eats plants and animals
    a. carnivore
    b. herbivore
    c. omnivore
    omnivore
  12. a way of categorizing animals of how they gain their energy
    a. trophic level
    b. food chain
    c. food web
    trophic level
  13. a step-by-step sequence showing a community of organisms where each animal is eaten by another animal
    a. trophic level
    b. food chain
    c. food web
    food chain
  14. a picture representing the feeding relationships among organisms in an ecosystem
    a. trophic level
    b. food chain
    c. food web
    food web
  15. the formation of nitrates
    a. nitrogen fixation
    b. denitrification
    c. bioamplification
    nitrogen fixation
  16. what are 3 ways that inorganic nitrogen is fixed into nitrates
    • fixed from lightning
    • fixed from bacteria in roots of legumes
    • fixed from bacteria that convert animal waste
  17. what is the formula for nitrogen fixation
    ammonia -> nitrites -> nitrates
  18. the process by which bacteria who convert nitrites into nitrates
    a. nitrogen fixation
    b. denitrification
    c. bioamplification
    denitrification
  19. what is the formula for denitrification
    nitrate -> nitrite -> nitrogen gas
  20. the build up of toxins as you move up the a food chain
    a. nitrogen fixation
    b. denitrification
    c. bioamplification
    bioamplifications
  21. what are fertilizers made of
    nitrates and phosphate
  22. can dissolve in water, plants can easily take in this element and pass it up the food chain
    a. phosphate ion
    b. calcium carbonate
    c. bioamplification
    phosphate ion
  23. formed to make shells and other body parts in aquatic organisms
    a. phosphate ion
    b. calcium carbonate
    c. bioamplification
    calcium carbonate
  24. why would a water source contaminated with nitrates or nitrites have to be treated before drinking
    • -can cause harmful ¬†reproductive and develepmental effects
    • -can seriously affect the blood's ability to relase oxygen
  25. what are two reasons a farmer might consider other alternatives prior to chemical fertilizers
    • -prevent contaminating water
    • -prevent soil contamination
  26. how do algal blooms eventually contribute to the death of waterways
    when algae die, bacteria use oxygen from the water to decompose them, as oxygen levels drop, fish and other animals die and the bacteria take more oxygen, 
  27. the destruction of a natural ecosystem either by humans or by natural disasters
    • a. nitrogen fixation
    • b. denitrification
    • c. ecosystem degradation
  28. what are 5 ways we can stop ecosystem degradation
    • -protect our land and water resources
    • -reduce pollution
    • -don't build on arable land
    • -avoid over fishing and meat consumption
    • -stabilize human population growth
  29. considers your lifestyle and resources used to calculate how much space on the planet you need to sustain life
    a. ecological footprint
    b. bioamplification
    c. food web
    ecological foorprint
  30. imagine a simple food chain that include energy source, producer, primary consumer, secondary consumer and decomposer
    water and sun > grass > grasshopper > snake > hawk > fungi >grass
  31. why are plants essential to all ecosystems
    • -they start off all food chains
    • -release oxygen
  32. what are 3 kinds of ecological footprints
    • pyramid of energy
    • pyramid of biomass
    • pyramid of number
  33. what are the 6 abiotic factors
    • temperature
    • the greenhouse effect
    • energy
    • soil
    • water
    • atmosphere
  34. why is the greenhouse effect considered bad
    it increases the carbon dioxide level and causes global warming
  35. why is the greenhouse effect considered good
    without it the earth would be too cold to sustain life
  36. what are ways that burning fossil fuels can negatively impact the environment
    • -increases the amount of carbon dioxide
    • -traps heat in our atmosphere
    • -ecosystems are damaged in order to gain access to them
  37. why does the amount of available energy decrease as trophic level increases
    only 10% is transferred from the producer to the primary consumer, this amount of energy continues to decrease up the trophic levels
  38. what are the main components of the carbon cycle (7)
    • photosynthesis
    • cellular respiration
    • organic carbon
    • carbon dioxide
    • dead tissue and waste
    • fossil fuels
    • calcium carbonate
  39. what are 2 ways that humans are disrupting the balance in the carbon cycle
    • cars and factories releasing carbon dioxide
    • degrading ecosystems
  40. what are the main components of the phosphorus cycle
    • phosphate rock
    • phosphate ions in water
    • phosphates in animals
    • decompose
    • phosphate runoff to oceans

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