Science Final Ch. 3 part 1

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Science Final Ch. 3 part 1
2012-01-21 14:34:19
Science Final

Cell functions
Show Answers:

  1. What is the cell theory?
    • All organisms are made of cells
    • All existing cells are produced by other living cells
    • The cell is the most basic unit of life
  2. What is the similarites between prokaryotic and eukaryotic cells?
    • Both are surrounded by a barrier called a cell membrane
    • Both conatin DNA at some point
  3. What do eukaryotic cells have?
    nuclueus and other membrane-bound organellses
  4. Are eukaryotic cells multicellular or single-celled organisms?
    They can be either
  5. What do prokaryotic cells have?
    • Cytoplasm, which holds the DNA
  6. Is a prokaryotic cell mulitcellular or single-celled organism?
    single-celled organism
  7. Are eukaryotic cells highly specialized or or do a wide variety?
    highly specialized
  8. Where is DNA kept in a eukaryotic cell?
  9. What organelles are only found in a plant cell?
    chloroplast, central vacuole, and cell wal
  10. What organelles are only found in animal cells?
    centriole and lysosome
  11. What surrounds the nuclues?
    nuclear envelope
  12. How do materials move in and out of the nuclues?
    nuclear pores
  13. How are proteins created?
    The assembly of risomomes beigin in the nucleolus, and ribosmes follow instructions from the nuclues to produce proteins, which are produced in the Rough ER. After the rough ER they move to the golgi apparatus. The golgi apparatus then modifies, sorts, and packages proteins before they are stored int he cell or released outside of the cell
  14. Rough Er
    invlved in protein synthesis and ribosomes are foun on the surface of it
  15. Smooth ER
    • makes parts of the cell membrane sucha s membrane lipds and detoxification fo drugs
  16. What does the golgi apparatus do?
    modifies, sorts, and packages proteins before they are stored in the cell or relased outside of the cell.
  17. What do lysosomes do?
    breaks down lipids, carbohydrates, and proteins into smaller molecules that ca be used by the cell
  18. What does a vacuole do?
    stores materials
  19. Where are chlorpolasts contained?
    in plants
  20. What do chloroplasts do?
    capture energy from photosynthesis and convert it into chemical energy
  21. what does the Cytoskeleton do?
  22. givves eukaryotic cells its shape and internal organization
  23. What is the cytoskeleton?
    a network of protein filaments that help the cell keep its shape
  24. does the cytoskeleton help the cel move?
  25. What does the mitocondria do?
    converts food into compounds that are easier for the cell to use
  26. What is a vacuole and what does it do?
    • a fluid-filled sac for teh storage of materials need by a cell.
    • EX. water, food moecules, and enzymes
  27. What does the cell wall do?
    gives protection, support, and shape to the cell
  28. Cell membrane
    controls what goes in and out of cells and is made of a double layer of phosphlipds