Biology Lab

  1. Explain Spallanzani's Classic Experiment
    • Beef Broth : Covered
    • Uncovered
    • "does bacteria arise from pre-existing bacteria or are they generated spontaneously from broth?"
  2. Hypothesis
    A formulation of a plausible explanation for the observation
  3. Observation
    watching and creating a hypothesis from what you see after stating the problem or question.
  4. Procedure
    • conducting experiments
    • testing your hypothesis
  5. Interpreting Data
    putting your observations into order
  6. Conclusion
    an educated response found by your experimentation and interpretation of the data you collected.
  7. Elodea Leaf: Cell Lab
    • used in fish aquariums
    • observe:
    • the cell wall
    • chloroplasts
    • cytoplasmic streaming
  8. Onion Cells: Cell Lab
    • Observe
    • the box shaped cells
  9. Potato Parenchyma Cells
    • Observe
    • The potato cells are called starch grains
  10. Epithelial Cell
    Both external and internal surfaces of multi celled animals are covered with this tissue
  11. Muscle tissue
    This tissue is able to contract thus moving parts of this organisms body
  12. Nervous Tissue
    This tissue is repsonsible for sending messages that coordinate body functions
  13. Supportive tissue, Bone
    Individual cells have no structure, this tissued provides shape and support to the organism
  14. Diffusion
    the movement or traveling of a molecule from one place to another through either a gas solid or liquid
  15. Gas
    like a molecule of perfume travels through the air to the nose of a person across the room
  16. liquid
    like the molecules in a tea bag travel throughout a cup of hot water to make a a cup of tea.
  17. solid
    like the coloring in a maraschino cherry "bleeds" into some jello or a juice stain travels into the fabric of a shirt.
  18. Principle One for Diffusion and Osmosis:
    The higher the temperature the faster the rate of diffusion
  19. Principle Two for Diffusion and Osmosis:
    The bigger the size of the bolecule the slower the rate of diffusion

    The smaller the size of the molecule the faster the rate of diffusion.
  20. Osmosis
    The diffusion of water.
  21. Osmosis Rule
    Water moves from a higher concentration of water to a lower concentration of water.
  22. Concentration Gradient
    The movement of one concentration of water to another concentration of water.
  23. Principle Three for Diffuision and Osmosis
    Water moves in osmosis from the higher concentration of water to a lower concentration of water
  24. Principle Four for Diffusion and Osmosis
    The higher the concentration gradient of water the faster the rate of osmosis
  25. Mitosis
    The replication of the nucleus of the cell with its chromosomes is called mitosis.
  26. Cyokinesis
    The dividing of a cell.
  27. cell cycle
    The life of a cell
  28. Meristematic tissue
    plant tissue that replicates itself

    making grass grow longer and trees grow taller.
  29. Prophase
    • duplicated chromosomes become visible as they condense
    • one of the two centrosomes moves to the side breaking the nuclear envelope
  30. Metaphase
    all of the chormosomes are aligned midway between the spindle poles
  31. Anaphase
    • Spindle microtubules separate the sister chromatids and move to opposite poles
    • each sister has become and individual UNDUPLICATED chromosome
  32. Telophase
    • The chromosomes reach the spindle poles and decondense
    • a nuclear envelope forms
  33. Meiosis
    Nuclear division process that halves the chromosome number, basis of sexual reproduction
  34. Prophase I
    • homologous chromosomes condese
    • pair up
    • swap segments
    • micortubules break up nuclear envelope
  35. Metaphase I
    Homologous chromosomes are aligned mid way between spindle poles
  36. Anaphase I
    • The homologous chromosomes separate
    • begin to head to spindle poles
  37. Telophase I
    • Two clusters of chromosomes reach spindle poles
    • A nuclear enevelope forms around each cluster
  38. Prophase II
    • The chromosomes condense
    • sprindle microtubles attatch to sister chromatids
    • breaks nuclear envelope
  39. Metaphase II
    Chromosomes are aligned mideway between poles of spindle
  40. Anaphase II
    • All sister chromatids are separate
    • all duplicated chromosomes head to the spindles
  41. Telephase II
    • A cluster of chromosomes reaches each spindle pole
    • A new nuclear envelope encloses each cluster.
    • Four Nucleai are formed
Card Set
Biology Lab
Spring 2011