Question

Is diffusion active or passive transport?

Answer 1

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.

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.