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Aquaporins are a class of proteins that are relatively abundant in plant membranes. Following are certain statements regarding the properties of aquaporins:
P. Aquaporins form water channels in the membrane.
Q. Some aquaporins also transport uncharged molecules such as NH3
R. The activity of aquaporins is not regulated by phosphorylation.
S. The activity of aquaporin is regulated by calcium concentration and reactive oxygen species.
Which one of the following combinations of above statements is correct?
P, Q and S
Q, R and s
P, R and S
P, Q and R
Answers (1)
The activity of aquaporins can be regulated by phosphorylation. Aquaporins are membrane proteins that facilitate the transport of water across biological membranes. They play a crucial role in regulating water movement in various tissues and organs of plants and animals.
Phosphorylation, the addition of a phosphate group to a protein, is a common mechanism for regulating protein function and activity. In the case of aquaporins, phosphorylation can modulate their activity by affecting their trafficking to the cell membrane or altering their water transport properties.
Therefore, statement R is wrong. Hence, the correct answer is option 1
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