General Science

Card Set Information

General Science
2010-12-01 21:57:11
Life science geology

General Science, Life Science, Geology
Show Answers:

  1. homeostasis
    balanced internal situation of a cell and the organism as a whole
  2. enzymes
    substances that start or speed up chemical reactions with out themselves being affected or changed. All cells make and use them
  3. DNA
    (Deoxyribonucleic acid) carries hereditary or genetic information for all cells. Genes contained in chromosones
  4. chromosones
    small rod-shaped bodies within a cell that control the characteristics that offspring receive from their parents.
  5. metabolism
    biochemical activites neccessary for life carried on by all cells, tissues, organs, and systems
  6. adaptation
    a trait or characteristic that lends itself to the survival of an individual or a species
  7. species
    a group of simlar organisms that can mate and produce fertile offspring
  8. nutrition
    the way an organism gets food or nutrients from its environment and uses it as fuel for growth and continued life
  9. ingestion
    taking in food
  10. digestion
    chemical changes that convert nutrients into a useable form
  11. assimilation
    changing nutrients into protoplasm
  12. synthesis
    the process where by small molecules are built into larger ones. Amino acids change into enzymes, hormones and protoplasm
  13. amino acids
    protein building blocks
  14. hormones
    chemical messengers produced by the endocrine glad that regulate and coordinate the body's activities
  15. circulation
    movement of fluid and the dissolved materials in carries throughou the cell or body
  16. regulation
    includes all the processes that control and coordinate the activities of a living organism
  17. endocrine
    coordinate bodily activities in animals
  18. auxins
    coordinate bodily activities in plants
  19. respiration
    breathing and cellular respiration or a combination of processes that release energy from glucose
  20. excretion
    organism getting rid of waste products
  21. growth
    increased cell size and/or numbers in an organism
  22. mitosis
    cells divide or replicate
  23. reproduction
    new individuals are produced by parent organisms
  24. asexual
    reproduction involving only one parent
  25. sexual
    reproduction requiring two parents of opposite sexes
  26. gametes
    reproduction cells
  27. plant stem functions
    • - move water upward from roots to leaves and move dissolved food materials down from the leaves to roots
    • -produce and support leaves and flowers
    • -provide a way to store food
  28. roots
    anchor plant in soil and absorb nutrients water and dissolve minerals
  29. photosynthesis
    food making process whereby inorganic materials are changed into nutrients
  30. chlorophyll
    help leaves use sun's energy to make carbohydrates from carbon dioxide and water
  31. invertabrate
    with out backbones
  32. vertebrate
    with spine made of bone or catilage and a noticeable development of the head
  33. circulatory system
    pumps blood throughout the body by means of a heart with two types of chambers atrium and ventricle
  34. Taxonomic Clasification levels
    • 1. kingdon
    • 2. phylum
    • 3. class
    • 4. order
    • 5. family
    • 6. genus
    • 7. species
  35. skeletal system
    carries body and supports and protects the vital organs
  36. muscular system
    enables the body to move, about 40% of body weight
  37. nervous system
    controls movement, provides communication between the individual and its environment
  38. endocrine system
    includes glands that regulate growth, blood pressure, and other functions
  39. circulatory system
    includes the heart and blood vessels, which transport oxygen and nutrients to cells throughout the body
  40. lymphatic system
    assists with bring oxygen to cells and removing waste products from them
  41. digestive system
    processes and helps distribute nutrients
  42. excretory system
    removes wastes from the body
  43. reproductive system
    gives humans the means to reproduce and contitue the species
  44. diseases
    disorder or problem taht keeps the body or its organs from functioning properly
  45. infectious
    causedby germs or bacteria, fungi, viruses, or parasite worms. most contagious
  46. viruses
    inorganic, but grow with in living cells
  47. noninfectious
    caused by malnutrition, poisoning, radiation, or malfunction of a bodily system
  48. genetics
    study of the ways characteristics are passed from parents to offspring
  49. laws of segregation
    individual hereditary traits, or units, separate in the gametes
  50. law of independent assortment
    each trait is inherited independently of other traits
  51. law of dominance
    when contrasting traits are both present one trait is dominant and one is recessive
  52. genes
    hereditary units
  53. mutation
    change or disruption in the DNA coding
  54. precambrian era
    • ranged from the planet's formation between 3.5 and 4.5 billion yrs. ago to 600 million yrs. ago.
    • characterized by formation of planet.
    • life is thought to have appeared towards end of era.
    • not divided into periods
  55. paleozoic era
    • 600 million to 230 million yrs ago.
    • Formation of many mountain ranges, the formation and disappearence of seas and oceans and appearence of life forms
  56. mesozoic era
    • 230 mil to 65mil yrs ago
    • rise and fall of dinosaurs and intro of ancient birds, snakes, modern fish
    • include triassic, jurassic and cretacious periods
  57. cenozoic era
    • current era
    • pleistocene epoch started about 500,000yrs ago and saw rise and fall of a global ice age
    • the holocene epoch started with the withdrawl of glaciers about 11,000 yrs ago.