Biology - Transport in cells

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What is diffusion?
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Net movement of particles from an area of high concentration to an area of low concentration
Is diffusion active or passive?
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Passive
Which 3 factors affect the rate of diffusion?
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Concentration gradient, temperature, surface area
What is osmosis?
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Net movement of water molecules through a partially permeable membrane from a dilute solution to a concentrated solution
What type of membrane is needed for osmosis?
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A partially permeable membrane
What is active transport?
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Movement of particles from a low concentration to a high concentration using energy from respiration
Why do root hair cells use active transport?
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To absorb mineral ions from dilute soil
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