Investigating the Effect of Caffeine on the Heart Rate of Daphnia Daphnia are extremely small aquatic invertebrates. They are transparent‚ so you are able to see their internal organs; this means it is easy to monitor their heart rate by observing them through a microscope [1]. Physiological results from caffeine consumption include the stimulation of heart rate‚ blood pressure‚ metabolism‚ body temperature and alertness. [2] In this practical investigation the aim was to determine whether the hypothesis
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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
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Lab Report 3: Daphnia‚ Human and Crayfish Cardiac Activity Introduction An electrocardiogram‚ abbreviated as ECG in this report‚ is a visual representation of an organism’s atrial and ventricular depolarization and repolarization. Previous research has shown that although there is variability in the amplitude and shape of the waves of ECG‚ dependent on the subject’s health‚ it follows a universal pattern that can be used effectively for biometrics. The experiments discussed in this lab report were
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Does caffeine affect heart rate? In this experiment we were examining the effect of caffeine on the heart rate of Daphnia which are water fleas. In my opinion I think that the caffeine will affect the heart rate because when the caffeine enters your blood from the stomach and small intestine it begins to stimulate your central nervous system‚ the Caffeine stimulates receptors in the cells of your heart to increase your heart rate. The increase of this heart rate speeds up your blood flow as well
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SIGMA-ALDRICH sigma-aldrich.com SAFETY DATA SHEET Version 5.0 Revision Date 21.05.2013 Print Date 12.08.2013 1. IDENTIFICATION OF THE SUBSTANCE/MIXTURE AND OF THE COMPANY/UNDERTAKING 1.1 Product identifiers Product name : Paracetamol Product Number Brand : : P0300000 Fluka 1.2 Other means of identification no data available 1.3 Relevant identified uses of the substance or mixture and uses advised against For R&D use only. Not for pharmaceutical‚ household or other uses. 1.4 1.5
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Triphosphate (ATP)‚ which gives them the energy they need to perform. In this experiment‚ creatine is added to water and its effects on Daphnia is tested. By observing the heart rate‚ one can determine if the creatine increases or decreases heart rate. Heart rate was chosen to be measured because one can then see how creatine affects the heart. If it is unhealthy for the Daphnia‚ it could potentially be unhealthy for humans. “Long-term safety of creatine supplementation has been questioned. This retrospective
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the effects that daphnia had on algae growth. Lastly sampling is important because you need to be able to take the right measurements and the right amounts of sampling so we are discovering all aspects of the experiment. Taking each dose and filtering it helped see if phosphorus would have an effect on each of the three flasks by taking one sample of non filtered water and one with filtered water. I think for both of the graphs show that the treatment with the algae and daphnia was something to
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Safety Data Sheet in accordance with Regulation (EU) No.453/2010 Page 1(13) ANTIFROGEN N Substance key: SXR024717 Version : 4 - 2 / EU Revision Date: 09.04.2013 Date of printing : 26.04.2013 SECTION 1: Identification of the substance/mixture and of the company/undertaking 1.1. Product identifier Trade name ANTIFROGEN N Material number: 107601 1.2. Relevant identified uses of the substance or mixture and uses advised against Relevant identified uses of the substance or mixture
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SAFETY DATA SHEET TIXOSIL 38A Revision: 2.00 BR ( EN ) Issuing date: 21.01.2013 1. IDENTIFICATION OF THE SUBSTANCE/MIXTURE AND OF THE COMPANY/UNDERTAKING 1.1 Product identifier Trade name : TIXOSIL 38A 1.2 Relevant identified uses of the substance or mixture and uses advised against Uses of the Substance/Mixture : Specific use(s): Adsorbents‚ Desiccant‚ Flow improver Uses advised against : Medicinal products 1.3 Details of the supplier of the safety data sheet Company
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PRACTICALS You will need to know these practicals as the exam board may ask you questions based on them. Below is a summary of each one. Name of practical and independent & dependent variables Effect of caffeine on Daphnia heart rate Independent: caffeine concentration Dependent: heart rate of Daphnia Measuring the content of Vitamin C in fruit juice Independent: fruit juice Dependent: volume of juice required to decolourise 1cm3 of DCPIP The effect of temperature on cell membranes Independent: temperature
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