You are presented with the question "What is needed from cells for phosphatases to keep the proper pH?" and the following answer choices: 
- plasma
 - secretion of bases only
 - secretion of proteins
 - metabolic reaction
 - it helps plants in growing
 - Positive charges
 - Transfers energy
 - secretion of acids and bases

Now knowing that cells secrete acids and bases to maintain the proper pH for enzymes to work and phosphatases are enzymes that remove phosphates from other enzymes, choose the best answer.


 

        secretion of acids and bases 