Worms on Drugs Lab Report

Worms on Drugs Lab Report - Hitchcock 1 Ashley Hitchcock...

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Hitchcock 1 Ashley Hitchcock Biology 102 Lab Professor Block 4/27/2015 Worms on Drugs Abstract: The purpose of this experiment was to observe the pulse rate of worms in different solution treatments and to see if they would significantly change depending on the treatment. The solution treatments were the baseline of water, nicotine, caffeine, alcohol, chamomile, St. John’s Wort, and a mixture of caffeine and alcohol. This experiment was conducted over multiple lab sections with each group testing two worms in each solution treatment. This experiment was performed by placing each worm in the different treatments and observing whether or not the pulse counted off the worms significantly changed by increasing or decreasing. It was observed that most of the solution treatments increased the pulse of the worm while only the chamomile treatment decreased the pulse. Some of the treatments significantly changed the heart rate based off the fact that the p-value was less than 0.05; but most were not significant enough and thus they failed to reject the null hypothesis with the evidence of a greater than 0.05 p-value. It was found that while all treatments did change the pulse of the worm, they did not vary far enough away from the baseline to show a significant change. Introduction: Blackworms are an annelid related to earthworms based on the fact that they can absorb
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Hitchcock 2 the metabolites through their skin so it can quickly affect their bodies. They also possess a similar circulatory system to humans through the fact that it is closed. Their bodies are transparent enough to be able to see the changes in the vascular system and heart rate when exposed to a different external environment. Recently there have many new discoveries on how to increase the worm’s life span using medicine that is familiar to humans. Epilepsy drugs are now proving to increase the life of a worm. Worms are so similar to humans, that research and experiments conducted on worms can further help us discover how to improve our own lives. A moderate does of the drugs increased the worm’s life from 16.7 to 19.6 days, a 17% increase. A higher doses proved to be toxic and lesser doses had a lesser effect on the worm {4 Lesiuk,Nalena M. 2001; 6 Wickelgren,Ingrid 2005;}. A similar experiment was conducted with worms in Nicotine and Caffeine. For a Nicotine treatment, the worm’s pulse increased by nine beats per minutes. The Caffeine had an effect on the pulse as well. There was no evidence on whether the nicotine and caffeine had a direct or indirect effect on the worm though {4 Lesiuk, Nalena M. 2001; 6 Wickelgren, Ingrid 2005; 8 Lesiuk, Nalena M. 1999;}. One drug in particular has a large effect on the worm’s physiology. Nicotine is a paralytic agent that immobilizes the worm and allows access to the worm completely {4 Lesiuk, Nalena M. 2001;}. With the knowledge about the effect of Nicotine, this experiment’s purpose is to see the effects other drugs similar to nicotine have on worms. With the new information gathered from this experiment we can hopefully further investigate how these drugs affect our own bodies.
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  • Spring '14
  • BriannaE.Allison
  • Biology, Statistics, Null hypothesis, heart rate, Statistical hypothesis testing, pulse

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