BI-2146
Planning an investigation
Biology · Secondary 4 · Medium · Planning an investigation
A student investigates how temperature affects the activity of amylase in breaking down starch. She keeps pH and enzyme concentration constant and measures the time taken for starch to be completely digested at different temperatures. Which variable is the dependent variable in this experiment?
- Temperature of the reaction mixture
- Volume of amylase solution used
- Concentration of starch solution
- Time taken for starch to be completely digested
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