Substances may move into and out of cells across the cell ____ via ____. This is the spreading out of the ____ of any substance in solution, or particles of a ____, resulting in a net movement from an area of ____ concentration to an area of ____ concentration. Water may move across cell ____ via ____. This is the diffusion of ____ from a ____ solution to a ____ solution through a ____ membrane. Active transport moves substances from a more ____ solution to a more ____ solution (____ a concentration gradient). This requires ____ from respiration. Active transport allows ____ to be absorbed into plant root hairs from very dilute solutions in the soil. Plants require ions such as magnesium for healthy growth. It also allows ____ to be absorbed from lower concentrations in the gut into the ____ which has a higher sugar concentration. Sugar molecules are used for cell ____.

Diffusion, Active Transport and Osmosis

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