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| 1. |
What are factor affecting the rate of diffusion |
| Answer» Diffusion\xa0can occur across partialy permeable membranes, such as those surrounding cells. Therefore,\xa0diffusion\xa0is involved in the movement of\xa0important\xa0molecules into and out of cells. It is\xa0important\xa0for the uptake of substances needed by cells, and also the removal of waste products produced by the cells.\xa0The\xa0diffusion\xa0of chemicals and gases in and out of cells is an essential activity in human organs.\xa0Diffusion\xa0of oxygen and carbon dioxide gas\xa0occurs\xa0in the lungs.\xa0Diffusion\xa0of water, salts, and waste products\xa0occurs\xa0in the kidneys.\xa0Diffusion\xa0of calcium from food into cells\xa0occurs\xa0in the intestines. | |