The substances like CO2 and water move in and out of a cell by diffusion
Diffusion is a physical process in which the substance or molecules move from the region of higher concentration to the region of lower concentration. This process occurs in all three states of matter – gases, liquids, or solids and is found fastest in gases when compared to liquids and solids.
Diffusion is one of the important process and essential activity in human organs. Listed below are a few examples of the diffusion process in the living system.
- Movement of oxygen and carbon dioxide gas in the lungs.
- Movement of water, salts, and waste products in the kidneys.
- Movement of calcium from food into cells occurs in the intestines.
- Movement of the molecules during various metabolic or cellular processes.
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