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In an experiment where additional aquaporins are inserted onto the pelvic patch membrane of a frog, what is most likely to occur?

A. Water permeability will remain the same.
B. Water permeability will decrease.
C. Water permeability will increase.
D. Salt permeability will increase.

Answer :

Final answer:

Additional aquaporins in the pelvic patch membrane of a frog will most likely increase the water permeability. The amount and flow of water in cells, regulated by these aquaporins, directly influences the osmolarity and functioning of the organism.

Explanation:

In an experiment where additional aquaporins are inserted onto the pelvic patch membrane of a frog, water permeability will most likely increase. This is due to the function of aquaporins, which are integral membrane proteins that serve as channels in the transfer of water, and in some cases, small solutes across the membrane. They play critical roles in controlling the water contents of cells, which directly influences the osmolarity of the cell and the surrounding fluid — similar to the way active transport of NaCl would affect osmolarity in the Loop of Henle, as seen in the kidney function.

In case of Paramecia, rate of contraction can increase or decrease depending on the osmolarity because of the diffusion of water or salt into the Paramecium. If the membrane's permeability to water increases, the rate of contraction could increase due to more water entering the cell. If however, more salts enter, the rate of contraction could decrease. This mechanism works in the same way as aquaporins affecting water permeability in a frog's pelvic patch.

Learn more about Aquaporins here:

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