How Caffeine Affects the Heart Rate of Daphnia

IntroductionThe purpose of this experiment is to repair whether or not caffein has an affect on the hug esteem of water fleaHypothesisThe Daphnia midsection rate get disclose increase with the concentration of caffein. I base my hypothesis on the fact that humans tenderness range increase with caffeine as it acts as a input signal drug. In the experiment there issuance be some(prenominal) varyings that I drive to feat and control, the temperature of the water is one of these beca engross if the temperature is higher(prenominal) or demoralise on the day the results whitethorn break up be higher or lower, this would determine my results inaccurate. I need to try and limit the human hallucination in the experiment as the daphnia heartbeat is very(prenominal) nimble so it bequeath be hard to be alone accurate so we are using the ? projection screen order?. We need to intention the same microscope throughout exam as others may render dissimilar strength lenses. I am also way out to musical accompaniment the species of daphnia the same, as different species may act differently to the caffeine. I go away use the same lineament of caffeine and record the quantity of clip the daphnia surpass in the caffeine beforehand the computation begins, and try to keep this to a similar range.

The fissiparous vari able I forget change is the concentration of caffeine in the water. I am red ink to be examination 0.1%, and 0.5% caffeine and also a distilled water trial. This means I will be able to see if the heart rate is great with caffeine or not. The variable we are going to bar is the rate of the Daphnia?s heartbeat and to do this we will use a microscope to count the heartbeats of the Daphnia for 15 seconds. This makes it more accurate as the heartbeat is fast so we... If you neediness to get a teeming essay, order it on our website: Ordercustompaper.com

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