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The soft drink industry is facing new challenges. Water can move through the different cells due to the difference of water potentials in the cells. Effects of Caffeine and Nicotine on Lumbriculus Variegatus. The columns represent the mean change in pulsation rates of different caffeine concentrations and decaffeinated coffee, tea and instant coffee. The error bars of each column represent the standard deviation for that treatment. (2018, Feb 15). 0mM.

2. III. 2 0 obj The age, genetic makeup, general health, and the size of the worm can really affect the pulsation rates as well.

The control group of the different concentrations of caffeine, taken in the first week, has a mean of -1. %PDF-1.7 %���� 20) Get the average pulsation rate per minute from both environments (first and second bowl) and record the data on the table. Students looking for free, top-notch essay and term paper samples on various topics. As we add tobacco, there may be an increase in the change in pulsation rates of the L. variegatus. 3) Using the plastic pipette, remove the worms from the water and place two worms per bowl. (Lesiuk and Drewes, 1999b) Pulsation rate is sensitive to pharmacological agents and is significantly accelerated by both caffeine and nicotine.

Errors like looking at different segments of the body during the reading of pulsation rates can also occur. There are two types of circulatory system. The reason the pulsation rate increases and then decreases with the intake of nicotine is because it causes an increase in heartbeats and with a large doze it can result to no heartbeat at all. The standardized variable of this experiment would be the temperature of the surroundings of the L. variegatus, the three pulsation rates taken for each worm before and after the treatments, and also the amount of time each worm was kept in their respective treatments. Despite the fact that the results can be applied to organisms that share the same physiology as the L. variegatus, it can’t really tell us much about the other organisms because the data isn’t reliable. The purpose of this laboratory exercise was to demonstrate and explain the effects caffeine on the circulatory system of blackworms and to test the hypothesis that high concentrated caffeine ill double the heart rate pulsation of blackworms. Fortunately, the Pope enjoyed it so much that he blessed it, and converted it to a Christian beverage. Essay, 2 pages. 07 beats per minute and a standard deviation of 1. Biology 104 Presentation. (Find a price that suits your requirements), The Essay on The affect of Caffeine on pulse rate, The Essay on Effects Of Caffeine Coffee Body Increasing, The Essay on Rates Of Reaction Rate Time Concentration, The Essay on To investigate the effect to the potato cells in the different solute concentration water, Rates Of Reaction Rate Time Concentration, The effect of coffee on the heart rate of daphnia, Caffeine and its effects on the human body. An experiment was conducted to study and explore the circulatory system by exposing Lumbriculus variegatus, black worms, to household drugs. ABLE 2005 Proceedings Vol. 13) Remove a whole worm from the second bowl with the plastic pipette.

Comments. Since caffeine stimulates the body, increasing heart rate and blood pressure, and alertness, caffeine could be classified as a stimulant drug. 25mM, and there is also the decreasing trend in the change of pulsation rates with the concentration of nicotine reaching 1. Essay, 7 pages. The results cannot be applied to organisms that have completely different physiology than the L. variegatus. 2016/2017. Costa Coffee is one of the most famous coffee chains in the UK. Goatherds there noted that goats which ate leaves and berries of the plant remained awake all night.

The graph didn’t follow the trend we had expected to see for tobacco. The dependent variable is pulsation rates of L. variegatus before and after they were in the treatments. Dunkin’ Donuts has defined its strategic heartbeat as the daily, easy coffee stop that motivates rituals that restore. The pulsation rate was observed along the dorsal blood vessel near, Effects of Caffeine and Nicotine on Lumbriculus Variegatus Essay, Effects of Caffeine and Nicotine on Lumbriculus variegatus, The dependent variable is pulsation rates of L. variegatus before and after they were in the treatments.

The results could also have been affected by the differences in the worm.

Looking at the trends of the change in pulsation rates of different concentration of caffeine and the different concentrations of nicotine (taken in the first week), we can determine an estimated concentration of caffeine in decaffeinated coffee, tea and instant coffee and an estimated concentration of nicotine in tobacco (taken in the second week). This bibliography was generated on Cite This For Me on Sunday, August 9, 2020 Some errors can be avoided to improve the experiment while others can’t be.

Additional materials, such as the best quotations, synonyms and word definitions to make your writing easier are spotted as the outer layer of the worm is transparent, and contraction waves are seen in the main vessel as a heart beat. uuid:562c47c8-abaa-11b2-0a00-782dad000000 Introduction This lab covered the effects of caffeine, nicotine, caffeine extract and nicotine extract on the pulsation rates of Lumbriculus variegatus, commonly known as blackworms.

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