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2011-05-27 00:04:40
biology words

quarter 4
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  1. tropism
    indicating growth or movement in a biological organism
  2. Auxin
    class of plant hormones
  3. Dormancy
    Period in organisms life cycle when growth and developement are temporarily stopped
  4. Cytokinin
    a class of plant growth substances (plant hormones) that promote cell division, or cytokinesis, in plant roots and shoots
  5. Thigmotropism
    a movement in which an organism moves or grows in response to touch or contact stimuli
  6. Phototropism
    directional growth in which the direction of growth is determined by the direction of the light source
  7. Gravitropism
    a turning or growth movement by a plant or fungus in response to gravity
  8. Epiphyte
    a plant that grows upon another plant
  9. Bacillus
    a genus of Gram-positive rod-shaped bacteria and a member of the division Firmicutes
  10. Coccus
    can be used to describe any bacterium that has a spherical shape
  11. Spirillum
    refers to a bacterium with a cell body that twists like a spiral
  12. Bacteria
    a large domain of single-celled, prokaryote microorganisms
  13. Conjugation
    temporary union of two single cells (or hyphae in fungi) with at least one of them receiving genetic material from the other
  14. Binary Fission
    a method of asexual reproduction in which an organism splits into two.
  15. Nitrogen Fixation
    nitrogen gets "fixed" by bacteria to become available for plants on earth
  16. Virus
    a small infectious agent that can replicate only inside the living cells of organisms
  17. Capsid
    the outer shell of the virus, and consists of monomeric subunits of protein
  18. Bacteriophage
    is any one of a number of viruses that infect bacteria
  19. Lytic Cycle
    is one of the two cycles of viral reproduction
  20. Lysogenic Cycle
    viral nucleid acid becomes part of the host cell chromosome and it's replicated with it
  21. Antibodies
    are produced by a type of white blood cell called a plasma cell
  22. Antigen
    is any substance that causes your immune system to produce antibodies against it.
  23. B-Cell
    are lymphocytes that play a large role in the humoral immune response
  24. T-Cells
    T lymphocytes belong to a group of white blood cells known as lymphocytes
  25. Gram Staining
    is an empirical method of differentiating bacterial species into two large groups
  26. Antibiotic
    powerful medicines that fight bacterial infections
  27. Vaccine
    a biological preparation that improves immunity to a particular disease
  28. Pathogens
    Infectious agent
  29. Ecology
    the scientific study of the relation of living organisms with each other and their surroundings
  30. Species
    is one of the basic units of biological classification and a taxonomic rank
  31. Populations
    is all the organisms that both belong to the same species and live in the same geographical area
  32. Community
    an interacting group of various species in a common location
  33. Ecosystem
    all the organisms living in a particular area, as well as all the nonliving
  34. Biome
    are climatically and geographically defined as similar climatic conditions on the Earth, such as communities of plants, animals, and soil organisms
  35. Producer
    Organism that survives by making/taking its food in directly
  36. Consumer
    organisms that survive off of consuming another
  37. Herbivore
    A organaism that only eats plants
  38. carnivore
    a organism that only eats meats
  39. Ominivore
    A species that eats both plant and meats
  40. Detritivore
    heterotrophs that obtain nutrients by consuming detritus (decomposing organic matter
  41. Decomposed
    turnin to dead organic matter
  42. Food Chain
    diagram of predator-prey relationships
  43. Food Web
    multiple food chains
  44. Trophic Level
    Energy pyramid between predator-prey
  45. Ecological Pyramid
    a graphical representation designed to show the biomass or biomass productivity at each trophic level
  46. Biomass
    renewable energy source, is biological material from living, or recently living organisms, such as wood, waste, (hydrogen) gas, and alcohol fuels
  47. Abiotic Factor
    pertaining to any non -biological factors that play a role in an organism's environment
  48. Aphotic Zone
    is the portion of a lake or ocean where there is little or no sunlight
  49. Biotic Factors
    pertaining to any living factors in the environment
  50. Carrying Capacity
    the number of individuals who can be supported in a given area within natural resource limits,
  51. Commensalism
    a class of relationship between two organisms where one organism benefits but the other is neutral (there is no harm or benefit
  52. Density dependent limiting factor
    reduce population growth with an impact that depends on current population
  53. Density Independent limiting factor
    population growt with an impact that doesnt depend on a current population
  54. Ecological Succession
    a fundamental concept in ecology, refers to more or less predictable and orderly changes in the composition or structure
  55. Emigration
    When organisms leave an area
  56. Exponential Growth
    If a population has a constant birth rate through time and is never limited by food or disease,
  57. Green Revolution
    refers to a series of research, development, and technology transfer initiatives, occurring between the 1940s and the late 1970s
  58. Greenhouse effect
    refers to circumstances where the short wavelengths of visible light from the sun pass through a transparent medium and are absorbed
  59. Habitat
    is an ecological or environmental area that is inhabited by a particular species of animal, plant or other type
  60. Immigration
    When an organism comes to an area
  61. Limiting factor
    When theres not of enough of something for everybody
  62. Logistic growth
    Population growth in which the growth rate decreases with increasing number of individuals until it.
  63. Mutualism
    When organisms find a way to work together so both are benefited
  64. Niche
    term describing the relational position of a species or population in its ecosystem to each other
  65. Permafrost
    Solid ice below the soil
  66. Photic Zone
    depth of light penetration
  67. Pioneer Species
    species which colonize previously uncolonized land, usually leading to ecological succession.
  68. Polar zones
    the part of the Earth's surface forming a cap over a pole; characterized by frigid climate
  69. Population Density
    is a measurement of population per unit area or unit volume.
  70. Primary Productivity
    is a term used to describe the rate at which plants and other photosynthetic organisms produce organic compounds in an ecosystem
  71. Sustainable Developement
    is a pattern of resource use, that aims to meet human needs while preserving the environment so that these needs can be met not
  72. Sustainable yield
    of natural capital is the ecological yield that can be extracted without reducing the base of capital itself
  73. Symbiosis
    is close and often long-term interactions between different biological species
  74. Wetland
    an area of land whose soil is saturated with moisture either permanently or seasonally. Such areas may also be covered partially or completely