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Question

Is diffusion active or passive transport?


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Solution

Diffusion:

  1. Diffusion is a passive mode of transportation. Passive transport does not require energy.
  2. A single substance moves from a high concentration area to a low concentration area until the concentration is uniform throughout the space.
  3. It has a tendency to distribute substances uniformly.

Types of diffusion:

Simple diffusion: Simple diffusion occurs when substances move through a semipermeable membrane without the assistance of a transporter. A transporter could be anything, such as a bacteria.

Simple diffusion- definition, principle, examples, applications

Facilitated diffusion: Movement of molecules across the cell membrane from a more concentrated substance to a less concentrated substance via transporter or a carrier molecule.


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