The data below are from an experiment that tested the effect of leptin on mice with a normal obese gene and mice with a defective obese gene. Assume that the experiment began with a group of mutant mice that were all the same mass, and a group of normal mice of the same mass.
-What role does the saline injection have in this experiment?
A)It is the control treatment.
B)It is the experimental treatment.
C)It is the independent variable.
D)It is the dependent variable.

Question

The data below are from an experiment that tested the effect of leptin on mice with a normal obese gene and mice with a defective obese gene. Assume that the experiment began with a group of mutant mice that were all the same mass, and a group of normal mice of the same mass. 
-What role does the saline injection have in this experiment?
A)It is the control treatment. 
B)It is the experimental treatment. 
C)It is the independent variable. 
D)It is the dependent variable.

Quizplus · Accepted Answer

The saline injection serves as the control treatment, providing a baseline to compare the effects of the experimental treatment.

The Data Below Are from an Experiment That Tested the Effect