Name the process by which substances can be absorbed against a concentration gradient.
Question
Name the process by which substances can be absorbed against a concentration gradient.
Solution
The process by which substances can be absorbed against a concentration gradient is called Active Transport.
Here are the steps involved in this process:
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The molecule that needs to be transported binds to a specific site on the carrier protein embedded in the cell membrane.
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On binding, the carrier protein changes shape, allowing the molecule to move across the membrane.
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The molecule is released on the other side of the membrane.
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The carrier protein then returns to its original shape, ready to transport another molecule.
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This process requires energy in the form of ATP (Adenosine Triphosphate), hence the term 'active' transport.
This process allows cells to move substances such as ions, glucose, and amino acids from areas of lower concentration to areas of higher concentration.
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