A cell expressing a feedback inhibition pathway that controls the levels of sugar hydrolysis is studied in a lab. Cells are placed in a sugar solution that can then be stained to detect sugar levels.
The normal cells in the solution show a level of sugars equivalent to a unit of 10.
A compound is added to a second sugar solution with the cells. This compound binds covalently to the allosteric site of an enzyme involved in the pathway and now the level of sugars are equivalent to a unit of 0.1.
Which of the options below BEST explain what happened in this experiment?