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GK QUESTION#3728

The primary function of which channel protein is to transport water across the cell membrane in response to the osmotic gradient created by active solute transport?

  1. AAquaporinsCorrect answer
  2. BMucins
  3. CTransferrin
  4. DCupredoxins
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Answer

A. Aquaporins

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Explanation

Aquaporins are membrane channels that facilitate rapid passive movement of water down an osmotic gradient. They do not pump water using ATP. Some aquaporin-family members also conduct selected small solutes.

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