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This document provides instructions for an A-level Biology core practical on investigating the effect of caffeine on heart rate in Daphnia. The practical involves measuring the heart rate of Daphnia in distilled water and different concentrations of caffeine over 10 minutes. Students are expected to follow written procedures, make accurate observations, record data methodically, and present and analyze their results. The purpose is to develop practical skills while investigating how caffeine affects heart r

Author

17wilsonl

Language

EN