Biology - transport

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4 Terms

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Diffusion

Net movement of particles from an area of higher concentration to an area of lower concentration

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Fill in the gaps: molecules enter and leave cells by diffusion through the_____ __________. Diffusion is the net movement of particles form an area of _______ concentration to and area of _______ concentration diffusion happens because molecules in a gas or liquid state are always moving _________. It is a passive process because it does not require energy. In diffusion molecule move _____ the concentration gradient.

  1. Cell membrane

  2. Higher

  3. Lower

  4. Randomly

  5. Down


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