What is the dependent variable in this experiment (Case Study 9)? [2 pt] the concentrations of the test substances used the test substances, butyric acid and tributyrin the Mitotic Index of the Caco-2 cells the cell type, Caco-2, used

The independent Variable in the given scenario IS "the concentrations of the test substances used"  

Explanation:

The independent variable characterizes as the variable that can be changed or controlled in a logical trial. It define the cause or effect behind a result. Independent variables are the factors that the experimenter changes to test their dependent variable. An adjustment in the Independent variables legitimately causes an adjustment in the dependent variable. The impact on the dependent variable is estimated and recorded.

d i think its   answer d

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme