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Transcript
Cell Transport Review Sheet.
Part I – Label the following:
A.
B.
F.
G.
H.
C.
D.
E.
Part II – Fill in the blank
1. The process of diffusion causes molecules to move from (low to high or high to low)
concentrations until a state of ____________________ is reached.
2. The diffusion of water is known as __________________.
3. ________________ diffusion uses proteins to bring materials into the cell from high to
low concentration, requiring no cell energy.
4. Diffusion, osmosis and facilitated diffusion are all examples of _____________ transport,
in which the cell does not need to use any energy.
5. During active transport molecules move from an area of ___________ concentration to
an area of ____________ concentration.
6. ________________ is a form of active transport in which the cell sends materials out of
the cell using vesicles, small storage structures that fuse to the cell membrane.
7. _________________ is the reverse of the process named in # 6. The cell membrane
wraps around a substance to be brought into the cell forming a vesicle around it.
8. There are two types of endocytosis: __________________ which involves bringing
solids or large molecules into the cell, and _________________, which deals with
bringing liquids or very small molecules into the cell.
9. In the pictures below each “X” represents a molecule of water. In each diagram indicate
which direction water will be moving (mostly in, mostly out, or equally in and out).
XXXXX
A.
XXXXX
XXXXX
XX
XXXXX
B.
XXXXX
XXXXX
C.
10. Look at each of the pictures below. Identify whether the picture represents a plant cell in
fresh water, distilled water or salt water.
A.
B.
C.
11. Look at each of the pictures below. Identify whether the picture represents a blood cell in
fresh water, distilled water or salt water.
A.
B.
C.
12. Why did the potato left in salt water or fresh water lose or gain water? What was
different about the amount of water inside and outside the cell, and what state were the
potato cells trying to reach?
13. How do facilitated diffusion and active transport differ? Is osmosis an example of facilitated
diffusion or active transport?
14. Compare a cell from a unicellular organism with a cell from a multicellular organism in
terms of cell specialization.
15. What is the function of active transport in moving small molecules and ions across cell
membranes?
16. Explain why a small cell is an efficient cell (in other words, why aren’t cells big)?
17. Explain how diagrams A and B below relate to osmosis. Be sure to discuss how tonicity
relates to the movement of water. Also, state which side of the tube is
hypertonic/hypotonic.