BIO 07

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Author:
nbk1hmy
ID:
48079
Filename:
BIO 07
Updated:
2010-11-14 14:28:25
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BIO
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  1. menstration cycle
    rebuilding the endometruim and releases of an egg
  2. women primary sex organ
    ovaries -makes gametes
  3. HCG --Human Chorionic Gongdatropin
    used to tell body that is prego
  4. scrotum
    • -hold testes
    • -muslces to contract
    • -close to body to be warm
    • -muslce relaxs when cool
  5. seminiferous tubule
    • 150 meters long
    • makes sperm
    • very coiled
  6. leydig cell
    produce testoserone
  7. bulbourethal gland
    • pre cum
    • total solution ejaculated is -semen
    • only 1% sperm
  8. head
    contains DNA
  9. mid piece
    contains mitochondria to power movement
  10. flagellum
    tail quickly moves to propel the sperm
  11. acrosome
    • cap of the head.
    • breaks down the zona pellucide
  12. ecology
    organisms interact with each other and the enviornment
  13. population
    group of one speiece in a particular area
  14. community
    all organishm of every speieces in a particular area
  15. ecosystem
    living and non living things in a partucular area
  16. species
    organisms inter-breed for a viable offspring
  17. population size
    # of indiviuals in population
  18. population density
    # of indiviuals per square area
  19. estimations
    tool used to determine population size and/or density
  20. " J shaped " growth curve
    (exponential)
    starts off small then grows rapidly
  21. as population size increases....
    so does population density
  22. An increase in population density....
    has negative effects in population growth
  23. Negative Effects
    • -competetion for resources
    • -increased chance of being preyed on
    • -disease easily spread
  24. " S shaped curved"
    initial exponentail growth followed by growth stabalization
  25. carry capacity
    # of indiviuals the environment can support
  26. "boom and Bust" growth pattern
    • -seasonal changes
    • -found in smaller organisms
  27. "predator & prey interaction"
    as prey population grows so dose the predator and same for when it dies
  28. fertitlity rate
    average number of children per female in a population
  29. what affects population size
    +/-
    • + birth and immigratioin
    • - death and emmigration
  30. habitat
    physical surrounding of a population
  31. niche
    "occupation" of a population within its habitat
  32. competition exclusion principle
    2 species for the same cital resource only one wins and the other does extinct
  33. comouflage
    organsim looks like the enviornment
  34. mimocry
    taking appreance of the different species for the benefits
  35. Trophic Levels
    feed levels
  36. Four levels of trophc levels
    • 4) teritaty consumer-eat secondary consumers
    • 3)secondary consumer- eat primary consumers
    • 2)primary consumer-herbivores; eat producers
    • 1)producers- use photosynthesis; self feeding
  37. food web
    graphic reprsentation feeding relationship in a community

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