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  • Daphnia Essay

    823 Words  | 4 Pages

    Investigating the effect of caffeine concentration on the heart rate of Daphnia Introduction Daphnia, commonly known as water fleas, are tiny crustaceans which live in water. The diameter of adult female bodies is approximately 3-5 mm. The upper skeleton is transparent, making the internal organs visible. This allows the heart rate of the Daphnia to be calculated by observing them under a microscope. Background Caffeine occurs naturally in some plants such as coffee beans and tea leaves.

  • Essay On Daphnia

    734 Words  | 3 Pages

    What is the “water flea?” The most scientific name for this little water flea is called the Daphnia, a very small planktonic crustacean that measures up to five millimeters long. Daphnia are part of the Cladocera family, which are small crustaceans of all sorts commonly called water fleas. The Daphnia are called water fleas because the movements they make are very similar to the way fleas move around. Daphnias “inhabit most types of standing fresh water except for extreme habitats, such as hot springs

  • Case Study Of Daphnia

    1436 Words  | 6 Pages

    Introduction Daphnia are a common freshwater zooplankton, they are a member of the crustacean family. Daphnia are ectothermic animals which means their core body temperature fluctuates depending on the temperature of their environment. Temperature has a powerful effect on the biological processes of ectothermic animals. Acute changes to water temperature can have major impacts upon genetic growth and development as well as physiological and metabolic processes. Changes in temperature that remove

  • Daphnia Case Study

    808 Words  | 4 Pages

    Effect of Caffeine on Heart Rate of Daphnia Problem Statement How the Effect of Various Coffee Bean Roasts on the Heart Rate and Longevity of Daphnia Magna. Background Information on Coffee Caffeine is a compound found in mostly tea leaves, coffee beans, soft drinks, and some prescriptions. caffeine has a bitter taste to it. It is a white crystalline xanthine alkaloid. It’s from a family called heterocyclic compounds, and it is from a member of methylxanthines. Xanthines are purine that are

  • Measuring the Heart Rate of Daphnia

    1236 Words  | 5 Pages

    Heart Rate of Daphnia Daphnia is the name of a group of small, aquatic crustaceans commonly called 'water flies'. Because their exoskeletons are clear it is possible to watch daphnia hearts without cutting them open. This also allows the changes in daphnia heart rate to be studied quite easily. Hypothesis I predict that a daphnia should have a heartbeat of 190 to 200 per minute. However this would also be dependent of the room temperature as daphnias are cold blooded

  • Daphnia Magna Experiment Report

    626 Words  | 3 Pages

    concentrations of ethanol on the heart rate of Daphnia Magna. This experiment was performed on May 20th, 2014 in a closed environment at the University of Toronto. The test subjects Daphnia Magna, were collected from the Cell and Systems Biology Daphnia Colony, in which they were maintained at room temperature. The Daphnia sp are relatively common model organisms that are inexpensive, easy to care for, transparent, and also survive well in culture. In addition, the Daphnia Sp are able to quickly adapt physiologically

  • Investigating the Effect of Alcohol on Heartbeat of Daphnia

    2282 Words  | 10 Pages

    of Alcohol on Heartbeat of Daphnia Daphnia are the organisms that are involved in this experiment to find out what effect alcohol has on their heartbeat. It is easy to study the effects of alcohol on the heart of Daphnia as the organ can be easily seen through the transparent body of Daphnia. The number of heartbeats may be counted before submersion in alcohol and after submersion in alcohol to investigate the effect of alcohol. Daphnia belong to the Phylum Arthropoda

  • An Investigation to Show the Effect of Temperature on Daphnia

    1268 Words  | 6 Pages

    An Investigation to Show the Effect of Temperature on Daphnia Plan: I will submerge some daphnia contained in a test tube in water of differing temperatures and measure their subsequent heart rates. Hypothesis I think that the heart rate of the daphnia will increase up until around 40ËšC at which point most of the daphnia's enzymes will have denatured and rate of metabolism will have stopped or decreased sufficiently to have stopped the daphnia's heart rate

  • Ibuprofen

    859 Words  | 4 Pages

    Ibuprofen Abstract The project that I chose to research was the effect of Ibuprofen on the heart rate of the daphnia. The reason that I chose to do this was because many people in society use over the counter pain killers without really understanding any of the long term effects of this medicine other than clearing their aches pains, and swelling. One of the leading drugs on the market today is Ibuprofen which you may know as Motrin or Advil. Both drugs are identical except for quantity and price

  • Study of the Four Lakes in the Yahara Chain

    1158 Words  | 5 Pages

    the water quality enhancement should be in balance with the managements in all the chain. The parameters used in this research were: 29-33 years of data for P inputs, outputs, initial concentrations for each lake and the activity of zooplankton (Daphnia pulicaria) only in for the two upper lakes (Lake Mendota and Lake Monona). The study site included four lakes in the Yahara chain: Mendota, Monona, Waubesa and Kegonsa. The Lake Mendota is the largest and deepest of all 4 lakes, it has an influent