The Effects Of Caffeine On The Heart Rate Of Daphnia

The Effects of Caffeine on the Heart Rate of piss flea         This lab was designed to show how caffein affected the nose drops 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 name line pressure to increase. Its effects range from mild alertness to heigh 10ed anxiety and body tension. We necessityed to see if caffeine affected the daphnias sum arrange in the same way.         We fill up triplet containers with three different concentrations of caffeine. The first container was our catch with no caffeine, the gage was filled with a .5% concentration of caffeine, and the third was filled with a 1% concentration of caffeine. Five daphnia were hence position in each container for ten minutes. After the daphnia were open to the concentrations for ten minutes, we used micropipettes to remove them from the soluti on and place them under a compound microscope. While they were under the microscope, we counted their sorenessbeats for twenty seconds then multiply the number by three. Each stem of daphnias face lays was totald to get a more accurate shopping center 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(prenominal) levels of caffeine had an average heart rate of 195.9 beats per minute, the assembly that was exposed to the .5% concentration of caffeine had an average he! art 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 world-shaking increase in... If you want to get a full essay, format it on our website: BestEssayCheap.com

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