Chapter 7 Bio

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Author:
emilyyx14
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58233
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Chapter 7 Bio
Updated:
2011-01-05 15:33:16
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Bio
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Bio
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  1. Who was the first person to observe and identify a cell?
    Robert Hooke
  2. Which two people invented the first microscope?
    Hans and Zacharias Janssen
  3. Name the 3 types of electron microscopes?
    • TEM (transmission electron)
    • SEM (scanning electron)
    • STM (scanning tunneling)
  4. cells that do not have a membrane enclosing their DNA
    prokaryotes
  5. Cells that have a nucleus and other membrane-bound organelles
    Eukaryotes
  6. Name examples of eukaryotes
    Protists, Fungi, Plants, and Animals have eukaryotic cells
  7. what 2 structures in a cell produce energy?
    mitochondria & chloroplast
  8. how do we know plant cells are eukaryotic?
    eukaryotic cells have organelles and membrane bound DNA and so do plants
  9. all cells have ____ which ____
    • plasma membrane
    • controls what enters and exits the cell
  10. all cells have ______ that make ____
    • ribosomes
    • protein
  11. the living jelly-like material outside the nucleus
    cytoplasm
  12. Name the 2 types of genetic material.
    DNA & RNA
  13. eukaryotic cells evolved from
    prokaryotic cells
  14. what is the cell membrane composed of ?
    phospholipid bilayer
  15. define selectively permeable
    property of the plasma membrane that allows it to control movement of substances into or out of the cell
  16. which part of a cell produces ribosomes?
    nucleolous
  17. which part of a cell create structure?
    cytoskeleton, cell wall, and central vacuole
  18. what structure can only be found in a plant cell
    chloroplast
  19. which part of a cell stores water?
    vacuole
  20. the movement of a substance from a higher concentration to a lower concentration
    diffusion
  21. diffusion occurs until
    dynamic equilibrium is reached
  22. diffusion can be effect by
    temperature
  23. the heat makes diffusion ___
    faster
  24. diffusion of water
    osmosis
  25. three ways osmosis occurs
    • hypotonic
    • isotonic
    • hypertonic
  26. hypotonic=
    swells up
  27. hypertonic=
    gets smaller
  28. isotonic=
    stays the same
  29. isotonic means
    equal
  30. when a substance must move from an area of lower concentration to an area of higher concentration
    active transport
  31. energy is requires to
    move the substance through a carrier proteins
  32. an example of an active transport is a
    sodium potassium pump
  33. transport protein=
    moves things inside and outside of the cell

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