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Why does water move along its concentration gradients?

2 Answers

2 votes

Final answer:

Water moves along its concentration gradients by osmosis, which causes it to traverse from areas of high water (low solute) concentration to areas of low water (high solute) concentration through a semi-permeable membrane, facilitated by aquaporins.

Step-by-step explanation:

Water moves along its concentration gradients due to the process known as osmosis, which is a special case of diffusion. Osmosis is the movement of water through a semi-permeable membrane from an area where water is more concentrated (and solute concentration is lower) to an area where water is less concentrated (and solite concentration is higher). The driving force behind this movement is the osmotic gradient, which is the difference in solute concentrations on either side of the membrane. Aquaporins facilitate the movement of water and play an important role in the process. The movement of water will continue until the concentration gradient is eliminated or until the osmotic and hydrostatic pressures equilibrate. In biological systems, this mechanism ensures that water distributes itself evenly and that cells maintain a balanced internal environment.

6 votes
There is an electrical gradient and there is a concentration gradient.

1.) Chemical gradient better known as concentration gradient is much more powerful and compelling than the electrical gradient.

2.) Water is a polar molecule, meaning one side it positively charged while the other is negatively charged. This polar charged molecule causes water to have a weaker electrical gradient, thus the water has to move on its concentration gradient.
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User Jason Ridge
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