Answer:
The correct option is D
Explanation:
From the question we are told that
The pH of the aqueous solution is [tex]pH = 7[/tex]
The isoelectric point is [tex]pl = 9[/tex]
From the data given we see that the
[tex]pH[/tex] is below [tex]pl[/tex]
So the protein will have a net positive charge
A protein has an isoelectric point (pI) of 9, the statement which best describes the state of this protein is that the protein will have a net positive charge.
Isoelectric point of any susbatnce is the pH of the substance where net charge on that substance will be zero, i.e. no. of positive charged ions will equal to the number of negative charged ions.
In the question it is given that value of isoelectric point (pl) of protein is 9 and given value of pH is 7. It means that isoelectric point is higher that given pH so the protein molecule should bear a positive charge on it. If pH value is greater than pl value then molecule will bear a negative charge.
Hence option (D) is correct.
To know more about isoelectric point, visit the below link:
https://brainly.com/question/14511468
