2.13 understand that movement of substances into and out of cells can be by diffusion, osmosis and active transport

Diffusion

• Oxygen diffusing into blood cells
• Carbon dioxide diffusing into leaves for photosynthesis

Osmosis

• When water diffuses into plant cells making the cells turgid

Active Transport

• Root hair cells actively taking mineral ions such as magnesium for chlorophyll
• In kidneys, salts are actively uptaken into the blood

 

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