1.

How do substances like Carbon dioxideand Water move in and out of the cell?​

Answer»

Water, carbon dioxide, and oxygen are few simple molecules that can cross the cell MEMBRANE by diffusion (or osmosis). Diffusion is one principle method of movement of SUBSTANCES within cells.

  • Diffusion: It occurs when particles spread. They move from a REGION where they are in high concentration to a region where they are in low concentration. Example: GASES.
  • Osmosis: Osmosis is the movement of a solvent across a semipermeable membrane toward a HIGHER concentration of solute to (lower concentration of solvent). Examples: Gases & Liquid.

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