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Name: _______________________
Date: _______________________
Biology
Cell Transport WS
I.
Answer the following questions using pgs. 81-91 as a reference:
1. A cell was poisoned by a substance that destroyed all of its mitochondria. Circle all of the cell
transport processes listed that would still be able to continue.
a. Osmosis
d. Exocytosis
b. Diffusion
e. Pinocytosis
c. Facilitated diffusion
f. Phagocytosis
2. On the diagram of the cell membrane: Label the following:
a. Phospho- head (polar)
b. Fatty acid tail (non-polar)
g.
c. Phospholipd molecule
h.
d. Cholesterol
i.
e. Integral protein
j.
f. Peripheral protein
Cytoskeleton
Carbohydrate chain
Cytoplasm
Extracellular fluid
3. As diffusion occurs (use the diagram below), what would happen (increase/decrease) to the
concentration of substance:
a. Inside the plant cell _________________________
b. Outside the plant cell _______________________
A
A
A
A
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AA
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AAAAA
Cell
A
Solution
A
4. Using the diagram, when would substance A stop diffusing?
________________________________________________________________
5. What would happen to a plant cell in each of the following solutions?
a. Hypertonic: The cell would ____________________________ because the water
molecules would _____________________.
b. Hypotonic: The cell would _______________________________ because the water
molecules would _______________________.
c. Isotonic: The cell would __________________________________ because the
water molecules would ______________________.
6. What would happen to an animal cell in each of the following solutions?
a. Hypertonic: The cell would ____________________________ because the water
molecules would _____________________.
b. Hypotonic: The cell would _______________________________ because the water
molecules would _______________________.
c. Isotonic: The cell would __________________________________ because the
water molecules would ______________________.
7. Complete the following sentences:
a. A plant deprived of water will wilt because of a loss in __________________ pressure.
b. The ability of a cell membrane to permit some substances to enter the cell and keep
others out is known as _____________________________.
8. Compare the similarities and difference for the following terms:
a. Phagocytosis & pinocytosis
i. Same:
ii. Different:
b. Molecular Pump & facilitated diffusion
i. Same:
ii. Different:
c. Exocytosis & endocytosis
i. Same:
ii. Different:
d. Osmosis & diffusion
i. Same:
ii. Different:
9. If you are stranded on the ocean, why should you NOT drink salt water (a hypertonic
solution)? Give your answer in terms of what you learned about cell transport.
10. When a hospital patient is given IV fluids, what tonicity should those fluids be and WHY?