The Effects Of Caffeine On The Heart Rate Of Daphnia

The Effects of Caffeine on the Heart Rate of peeing flea         This lab was designed to show how caffein affected the savor come in of cyclops after exposing them to different intentnesss of caffeine for decennary minutes. Caffeine is a stimulant, which, in humans, causes philia judge and scream line pressure to increase. Its effects range from mild alerting to heigh 10ed anxiety and body tension. We necessityed to see if caffeine affected the daphnias set arrange in the same way.         We fill up threesome containers with three different concentrations of caffeine. The first container was our discipline with no caffeine, the sustain was filled with a .5% concentration of caffeine, and the third was filled with a 1% concentration of caffeine. Five daphnia were thence move in each container for ten minutes. After the daphnia were assailable to the concentrations for ten minutes, we used micropipettes to remove them from t he solution and place them below a compound microscope. While they were under the microscope, we counted their nitty-grittybeats for twenty seconds then multiply the number by three. Each stem of daphnias summation targets was totald to get a more accurate fancy rate for each concentration.         Our hypothesis was that caffeine would increase the heart rate of the daphnia that were exposed to it. As seen on my graph, the control sort out of daphnia that was not exposed to both levels of caffeine had an average heart rate of 195.9 beats per minute, the radical that was exposed to the .5% concentration of caffeine had an average heart rate of 185.5 beats per minute, and the group that was exposed to the 1% concentration of caffeine had an average heart rate of 217.5 beats per minute. As expected, the daphnia that were exposed to the 1% concentration of caffeine had a fundamental increase in... If you want to get a full essay, orderliness it on our website: ! BestEssayCheap.com

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