Question

A student is studying the effect of temperature on the action of a protein digesting enzyme that is contained in stomach fluid. identify the independent variable in this investigation

Answer 1

The independent variable is the temperature. It is also called the manipulated variable. :)

Answer 2

Answer: Temperature

Step-by-step explanation:

• An independent variable is the one which does not depend on other factors to get its value.

• In the given experiment, the change in the digestive enzyme protein with respect to temperature is being studied. In such a case, the change in the enzyme is dependent on the temperature and hence, the temperature is an independent variable whereas the change in protein is the dependent variable.