define active transport ???
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Active transport is the process of moving molecules across a cellular membrane through the use of cellular energy.
Active transport is used by cells to accumulate needed molecules such as glucose and amino acids. Active transport powered by adenosine triphosphate (ATP) is known as primary active transport. Transport that uses an electrochemical gradient is called secondary transport.
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Active Transport is the absorption and transport of minerals, occur for normal growth and development like stems and leaves.
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