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Diffusion can be defined as ---.
Question 7 options:


Movement through a cell membrane by active transport using energy from ATP


Movement of particles from a region of high concentration to a region of low concentration


Movement of particles from a region of low concentration to a region of high concentration


The movement of particles up/against their natural concentration gradient.

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Answer:

Movement of particles from a region of high concentration to a region of low concentration

Explanation:

  • Diffusion can be defined as the movement of particles from a region of high concentration to a region of low concentration.
  • Diffusion is a special type of diffusion that involves movement of solute molecules from a region of a high concentration to a region of high concentration until equilibrium is achieved.
  • Diffusion is a passive transport of particles, which means it does not involve use of energy in the form of ATP like the case of active transport.

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