Bio Exam 1 info.

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Bio Exam 1 info.
2011-11-13 22:46:45

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  1. Ecology
    study of interactions between organisms & their environment
  2. Biodiversity
    variety of life on earth
  3. Learning
    a change in behavior resulting from experience
  4. Osmosis
    passive transport of water across a selectively permeable membrane
  5. Specific heat
  6. Universal solvent
    • water
    • *
  7. Lipids
  8. Nucleic Acids
    • DNA & RNA
    • store genetic info.
  9. Protein structure
    shape of protein makes certain function
  10. Organelles
    parts that make up a cell
  11. Cytoskeleton
    a network of fibers throughout the cell's cytoplasm that helps the cell maintain its shape and gives support to the cell
  12. Endomembrane system
    • The collection of membranes inside and around a eukaryotic cell
    • the intracellular system of a eukaryotic cell, comprising the endoplasmic reticulum, Golgi apparatus, lysosomes and plasma membrane. These are all connected by a flow of membrane from one to the other by means of small membrane vesicles.
  13. diffusion
    net movement of particles from substance where they are concentrated to less
  14. permeable
    ability for things to pass through it freely (ex. plasma membrane)
  15. equilibrium
    • when # of diffusing molecules moving in one direction equals the # moving the other
    • balance
  16. selectively permeable membrane
    • allows some substances to cross more easily than others
    • blocks some substances altogether
  17. passive transport
    when a cell uses no energy by the process of diffusion
  18. facilitated diffusion
    transport proteins provide a pathway for certain molecules to pass
  19. active transport
    when a cell uses energy to move molecules/ions across a membrane
  20. Function of integral membrane proteins
    • Help with things going in and out of the cell
    • **