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BIO NMDCAT Biological Importance of Water
nmdcat.online June 27, 2026

The concept of “aquaporins” is related to water’s biological role in a way that they are

A. Enzymes that catalyze the hydrolysis of water in photosynthesis
B. Membrane channels that facilitate the rapid, passive transport of water across lipid bilayers
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C. Proteins that increase the specific heat of the cytoplasm
D. Structural proteins that bind water to form the cytoskeleton

📝 Explanation

Aquaporins are integral membrane proteins that form water-specific channels. While water can slowly diffuse through the lipid bilayer, aquaporins allow for a much faster, regulated flux of water in tissues like kidney tubules, red blood cells, and plant roots where rapid osmosis is required.

📖 Additional Information

  • Enzymes that catalyze the hydrolysis of water in photosynthesis
  • Membrane channels that facilitate the rapid, passive transport of water across lipid bilayers
  • Proteins that increase the specific heat of the cytoplasm
  • Structural proteins that bind water to form the cytoskeleton

Aquaporins are integral membrane proteins that form water-specific channels. While water can slowly diffuse through the lipid bilayer, aquaporins allow for a much faster, regulated flux of water in tissues like kidney tubules, red blood cells, and plant roots where rapid osmosis is required.

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