daphnia Essay Topics

The effect of coffee on the heart rate of daphnia

Investigating the effect of coffee on the heart rate of daphnia Aim: To find out the effect of different caffeine concentrations on heart rate in daphnia Independent variable: •Caffeine concentration Dependent variable: •Daphnia heart rate Controlled variables: •Size of daphnia •Habitat from which the daphnia is obtained •Temperature of the surrounding How the variables can… View Article