'Scientific Paper on a Water Flea\r'

'The Effects of alcoholic beverage and Caffeine on the snatch Rate in water flea Magnus ? Erika Huizenga Ashley Kofahl The Effects of Alcohol and Caffeine on the Heartbeat Rate in water flea Magnus Abstract The projects purpose was to discover the effect of alcohol and caffein on the blinking enjoin in Daphnia Magnus. Our hypothesis is alcohol causes a decrease in heart drift, whereas caffein causes an quicken heart pace, predicting that the more caffeine we give the cyclops the faster it heartbeat mark will convey and the heartbeat rate will decrease as we give the Daphnia alcohol.\r\n later doing the investigate we give that the more caffeine we added to the Daphnia Magna the faster its heartbeat rate became. We also tack together that when we added alcohol to the Daphnia the heartbeat rate also affixd not supporting our hypothesis. Methods and Materials Location: Washtenaw Community College, 4800 East Huron Drive, Ann Arbor, MI 48105 LA building 205 at 12:30p. m . January 30, 2010 Materials: microscope, dickens glass micro slides, two pipettes, three Daphnia Magna, 2%, 4%, and 6% alcohol, 1%, 1 ? , and 2% caffeine, aquarium water, a stopwatch, a some atomic number 53 to record the data, administer the drugs and water to the Daphnia, and a person to count the heat beat generation. Procedure for the control: In order to make sure that alcohol and caffeine are the variables effecting the heartbeat rate we started by capturing a live Daphnia and placed it in a depression slide with a drop of kitty water from the culture jar. We outback(a) any additional water with the tip of a paper towel. side by side(p) we added one drop of aquarium water to the Daphnia.\r\n indeed we began to count the number of heartbeats for 10 seconds and then reckon by 6 to find the beats per minute and save the result. by and by two proceedings we retell the process, and the again after another two minutes to get three reading of heartbeat rate on the contro l. Procedure for alcohol and caffeine: To rule the effects of alcohol and caffeine on the cyclops we started by capturing a new Daphnia and placing it on a depression slide and removing any spare water. We Placed 1 drop of a 1% caffeine solution on the Daphnia.\r\nAfter time lag for a few seconds we began to count the heart beats and recorded the results on our data sheet. Next we removed the bare solution from the Daphnia and flushed it with aquarium water. Using the same procedure we monitored the effects of 1 1/2% and 2. 0% caffeine solutions and recorded our results and placed the Daphnia in the convalescence tank. After completing the caffeine series, we obtained a the second piece of drugs. This time instead of using caffeine we utilise varied concentrations of alcohol 2%, 4% and 6% using the same method as the caffeine procedure.\r\nAgain recording our results and placing the Daphnia in the reco really tank when finished. Results The original purpose of this experimen t was to determine how alcohol and caffeine effected the heartbeat rate of a Daphnia. The results of the experiment were that the higher percentage caffeine and alcohol placed onto the Daphnia the higher the heart rate. Average Daphnia Magnus Heartbeats per Minute ?? ? Conclusion After completing the experiment we found that when we gave the Daphnia caffeine the heartbeat rate did show an increase.\r\nHowever, we also found that alcohol also increased the number of generation the heart beat. Even though we performed all of the experiments very carefully, we whoremongernot be certain that the effect we saw was payable to the drugs. Perhaps the change in heartbeat rate is ca employ by the heat of the microscope light or a change in temperature. When we came into the lab to do the experiment the solutions were already sitting on the tables. The lab is used by some(prenominal) other students, therefore we can not be sure that the percentages of solutions were accurate or that they h ad not been tampered with.\r\nWhile trying to remove excess water the Daphnia got stuck to the paper towel which could lead caused stress making the heartbeat rate increase during the alcohol test. The removal or addition of the unhomogeneous test solutions may have had an impact on our test subject. When comparing our results to other groups we found that they had contrary results with alcohol. Because of this we feel that the experiment should be repeated several times and not done only one time to gain accurate results.\r\n'