Active transport
Active transport is a biological process by which cells move substances across their membranes against a concentration gradient, meaning from areas of lower concentration to higher concentration. This requires energy, usually in the form of ATP, because it is working against the natural tendency for substances to balance out. An example is how cells absorb glucose from the bloodstream, ensuring they have enough energy. Active transport is essential for processes like nutrient uptake, waste removal, and maintaining stable internal environments in cells, supporting overall health and function.
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Active transport is a biological process where cells move substances across their membranes against a concentration gradient, which means from an area of lower concentration to an area of higher concentration. This requires energy, usually derived from ATP (adenosine triphosphate), because it’s working against natural tendencies. Think of it like pushing a heavy object uphill: it takes energy to move it where it doesn’t want to go. Active transport is essential for maintaining proper cell function, allowing cells to uptake nutrients and ions and to remove waste, ensuring they can thrive in varying environments.