Which statement describes the dependent variable?
it is the causal variable.
it is the controlled variable.
it is the stimulus variable.
it is the measured variable.

The statement which describes the dependent variable would be the measured variable. We usually use the independent variable and manipulate it and change its levels to see how the levels of the measurable (dependent) variable change. 

the cell theory states that all living things including animals, as well as plants, are made of cells.