In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: In protists , vacuoles also store and help digest food that the protist ate .
A: 
In protists , vacuoles have the additional function of storing food which has been absorbed by the organism and assisting in the digestive and waste management process for the cell .