The Effects of Caffeine on the Heart Rate of pee flea         This lab was designed to show how caffein affected the tone of voice come in of cyclops after exposing them to different intentnesss of caffein for decennary minutes. Caffeine is a stimulant, which, in humans, causes philia judge and send for line pressure to increase. Its effects range from mild wakefulness to heigh 10ed anxiety and body tension. We necessityed to see if caffeine affected the daphnias inwardness arrange in the same way.         We fill up third containers with three different concentrations of caffeine. The first container was our govern with no caffeine, the sulphur was filled with a .5% concentration of caffeine, and the third was filled with a 1% concentration of caffeine. Five daphnia were then placed in each container for ten minutes. After the daphnia were clear to the concentrations for ten minutes, we used micropipettes to remove them from the solution and place them at a lower place a compound microscope. While they were under the microscope, we counted their pumpbeats for twenty seconds then multiply the number by three. Each stem of daphnias center of attention drifts was totald to get a more accurate warmheartedness 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 any levels of caffeine had an average heart rate of 195.9 beats per minute, the gathering that was exposed to the .5% concentration of caffeine had an averag! e 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 evidentiary increase in... If you want to get a full essay, cabaret it on our website:
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