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Name: _______________________________________________ FOUNDATIONS
DATE: ________
Section 7.3 – Facilitated Diffusion and Active Transport
Facilitated Diffusion and Active Transport
Facilitated diffusion occurs when a substance diffuses across the
cell membrane through a protein channel. Active transport occurs
when the cell uses energy to carry a substance across the cell
membrane.
Look at the diagrams. Label each as either facilitated diffusion or
active transport.
Use the diagram to answer the questions.
1. Which process can move molecules from a lower concentration
solution on one side of the membrane to a higher concentration
solution on the other side?
2. Which process does not require energy?
Name: _______________________________________________ FOUNDATIONS
DATE: ________
Section 7.3 – Facilitated Diffusion and Active Transport
Definitions
1. Facilitated Diffusion (a form of Passive Transport):
________________________________________________________________
________________________________________________________________
2. Active Transport: _______________________________________________
________________________________________________________________
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3. Endocytosis: __________________________________________________
________________________________________________________________
4. Exocytosis: ____________________________________________________
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Compare/Contrast Table Use a compare/contrast table when you want to see the
similarities and differences between two or more objects or processes. Select words or
phrases from the box to complete the table comparing passive and active transport.
diffusion
endocytosis
energy required
energy not required
Passive Transport
exocytosis
facilitated diffusion
osmosis
protein pumps
Active Transport