Passive Transport: Diffusion
Presentation
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Science
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9th - 10th Grade
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Practice Problem
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Medium
Sharon Payne
Used 48+ times
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7 Slides • 12 Questions
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Passive Transport: Diffusion
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There are two ways substances get into a cell:
Passive Transport: Does NOT require energy
Active Transport: DOES require energy
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Multiple Choice
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Passive Transport:
Does not require energy
Moves substances from areas of high concentration to low concentration
May or may not require the use of a channel protein
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There are several forms of passive transport:
Simple Diffusion
Facilitated Diffusion
Osmosis
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Simple Diffusion:
Does not use a channel protein; substances travel across the lipid bilayer
Moves small, none charged molecules from high concentration to low concentration
Oxygen and Carbon Dioxide
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Multiple Choice
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Facilitated Diffusion:
Requires the use of carrier proteins to move substances
Moves large, charged substances from high concentration to low concentration
Some substances use the protein as a channel
Some substances are moved by the protein
Glucose, Na+, Cl-
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Multiple Choice
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Osmosis:
The diffusion of water
Moves water from high concentration to low concentration
Water uses special channels called aquaporins to enter the cell
Water will move towards the side of the membrane with more solute 9salt, sugar)
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Multiple Choice
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Multiple Choice
Passive Transport: Diffusion
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