answer this biochemistry question 1-Which of the following statements is correct? Select one a. Aquaporins are selective

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answer this biochemistry question
1-Which of the following statements is correct?
Select one
a. Aquaporins are selective to water
B. Aquaporins do not show selectivity
c. Aquaporins are selective to cations
d. Aquaporins are selective to anions
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2-Which enzyme catalyzes phosphorylation of glucose in the cell?Select one:a HexokinaseB. Pyruvate kinaseC Phosphoglycerate kinased. Phosphofructokinase
2-Which enzyme catalyzes phosphorylation of glucose in the cell?
Select one:
a Hexokinase
B. Pyruvate kinase
C Phosphoglycerate kinase
d. Phosphofructokinase
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3- How many transmembrane domains do G protein-coupled receptors have?
Select one:
A. four
B. Six
C. Five
d. Seven