Chapter Cells7 Test

31 Questions | Total Attempts: 92

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Cell Quizzes & Trivia

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Questions and Answers
  • 1. 
    In plants, cells that transport water against the force of gravity are found to contain many more mitochondria than do some other plant cells.  What is the reason for this?
  • 2. 
    Figure 7-1 shows a light area with no surrounding membrane in the center of the cell.  This area contains a single large DNA molecule.  Would a scientist classify this cell as a prokaryote or a eukaryote? Explain.
  • 3. 
    Between which cell types is the difference greater-plant and animal cells or prokaryotic and eukaryotic cells?  Gice reasons for your answer.
  • 4. 
    Why is it important that some proteins extend all the way through the bilayer of a plasma membrane?
  • 5. 
    What problem might a cell develop if its plasma membrane did not have selective permeability?
  • 6. 
    Compare a cell membrane with the case of a waterproof watch.
  • 7. 
    Explain why the ways that the plasma membrane works is called the "fluid mosaic model"
  • 8. 
    Endoplasmic reticulum can be smooth or rough.  What are the differences between the two types of ER?
  • 9. 
    Why does active transport require more energy than osmosis than osmosis or facilitated diffusion?
  • 10. 
    Compare and contrast exocytosis and endocytosis.
  • 11. 
    What is the relationship between exocytosis and the Golgi apparatus? 
  • 12. 
    Why is a fishing net a good comparison with the plasma membrane?
  • 13. 
    What would happen to the structure in Figure 7-4 if part D is completely removed?
    • A. 

      A. It would disintegrate

    • B. 

      B. It would become more rigid

    • C. 

      C. It would have holes in it

    • D. 

      D. It would collapse in on itself

  • 14. 
    Where are you least likely to find water in the structure shown in Figure 7-4?
    • A. 

      A.C

    • B. 

      B. B

    • C. 

      C. E

    • D. 

      D. A

  • 15. 
    Which statement is true about bacterial cells?
    • A. 

      A. The cells are very large.

    • B. 

      B. They are eukaryotes.

    • C. 

      C. The cells have no nucleus.

    • D. 

      D. It would collapse in on itself.

  • 16. 
    Which is present only in eukaryotic cells?
    • A. 

      A. Cell membrane

    • B. 

      B. Chromosomes

    • C. 

      C. DNA

    • D. 

      D. Nucleus

  • 17. 
    Cholesterol is repelled by water and can be found between the layers of the phospholipids in the plasma membrane. What canbe concluded from this information?
    • A. 

      A. A high cholestrol diet should be avoided.

    • B. 

      B. Cholestrol is polar.

    • C. 

      C. Cholestrol is nonpolar

    • D. 

      D. Cholertrol is repelled by the polar tails.

  • 18. 
    Which substance on the plasma membrane helps identify chemical signals from outside the cell?
    • A. 

      A. Cholestrol

    • B. 

      B Membrane protein

    • C. 

      C. Transport Protein

    • D. 

      D. Carbohydrate Chain

  • 19. 
    Which organelle converts sugars into energy?
    • A. 

      A. Lysosome

    • B. 

      B. Ribosome

    • C. 

      C. Mitochondrion

    • D. 

      D. Nucleus

  • 20. 
    Cilia and flagella ........................................................................................................ ( a lot more, first two words)
    • A. 

      A. They hold neighboring cells in a fixed position

    • B. 

      B. They move substances along the surface of the cell

    • C. 

      C. They protect the cell by whipping at harmful cells

  • 21. 
    What kind of organism did the scientist find?
    • A. 

      A. Plant

    • B. 

      B. Animal

    • C. 

      C. Bacteria

    • D. 

      D. none

  • 22. 
    Chloroplasts are organelles that convert light into energy to sugars.
    • A. 

      A. Lysosomes

    • B. 

      B. Mitochondria

    • C. 

      C. Ribosomes

    • D. 

      D. Golgi Apparatus

  • 23. 
    At what point in the process of diffusion and active transport?
    • A. 

      A. When the movement of the molecules stops being random

    • B. 

      B. when the molecules are mixed and stop moving

    • C. 

      C. when the rate of change in the solution slows by one half

    • D. 

      D. when there is a continuous movement but no change

  • 24. 
    What ia a major difference between facilitated diffusion and active transport?
    • A. 

      A. Active transport moves substances against the concentration gradient.

    • B. 

      B. Active transport uses proteins in the process.

    • C. 

      C. Facilitated diffusion moves molecules through the plasma membrane.

    • D. 

      D. Facilitated diffusion requires large amounts of energy.

  • 25. 
    A plant cell is placed in  hyprotonic solution.  What will happen to the plant cell?
    • A. 

      A. it will swell

    • B. 

      B. it will shrink

    • C. 

      C. they will stay the same

    • D. 

      D. it will wilt