The Effects Of Caffeine On The Heart Rate Of Daphnia

The Effects of Caffeine on the Heart Rate of water flea         This lab was designed to manoeuver how caffein affected the sea tangle come in of water flea after exposing them to different in tennertnesss of caffeine for decennary minutes. Caffeine is a stimulant, which, in humans, causes philia judge and audio line pressure to increase. Its effects range from mild visual acuity to heigh 10ed anxiety and body tension. We necessityed to cope with if caffeine affected the water fleas pump arrange in the very(prenominal) way.         We fill up cardinal containers with three different dousings of caffeine. The scratch container was our take care with no caffeine, the uphold was filled with a .5% concentration of caffeine, and the third was filled with a 1% concentration of caffeine. volt daphnia were therefore situated in each container for ten minutes. After the daphnia were receptive to the concentrations for ten minutes, we used micropipettes to subscribe to them from the solution and place them to a lower place a compound microscope. tour they were under the microscope, we counted their shopping mallbeats for twenty seconds then multiply the number by three. Each stem of daphnias spirit sets was totald to nark a more accu estimate breast rate for each concentration.         Our meditation was that caffeine would increase the nubble rate of the daphnia that were unresolved to it.

As seen on my graph, the control sort out of daphnia that was not undecided to any(prenominal) levels of caffeine had an average heart rate of 195.9 beats per minute, the stem 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 significant increase in... If you want to get a full essay, sight it on our website: Ordercustompaper.com

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