IntroductionThe purpose of this experiment is to determine whether or not caffeine has an affect on the heart rate of DaphniaHypothesisThe Daphnia heart rate will increase with the concentration of caffeine. I based my hypothesis on the fact that humans heart rates increase with caffeine as it acts as a stimulant drug. In the experiment there will be several variables that I need to try and control‚ the temperature of the water is one of these because if the temperature is higher or lower on the
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The affect of caffeine on Daphnia Heart rate Aim: To see the effect of caffeine on the heart rate of the water flea Daphnia. Introduction: Caffeine is a stimulant which is derived from leaves‚ flowers and seeds of plants. The plant uses the caffeine as a way to repel insects as it is used as a natural pesticide by paralyzing and killing certain insects. It is used as a stimulant to human the central nervous system by increasing the stimulatory of the neurotransmitters‚ however high levels
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caffeine to the daphnia‚ the eart rate of the daphnia increases for example the daphnia’s heartbeat is 120 without caffeine‚ however when caffeine is added it is increased to 168. My graph shows a positive correlation and the error bars are also very small which shows that the results have a small range which suggests that my results are accurate and reliable. I think that the experiment was conducted well however there may be some ethical issues surrounding the fact that daphnias are also living
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Effect of Caffeine 1% and 2% on Daphnia magna’s Heart Rate Abstract: Ectothermic animals are animals whose body temperature is affected by their surroundings. This means that if the environment is cold the animal will be cold. If the environment is warm the animal will be warm. This is because the animal doesn’t have the capability of regulating its body systems to keep a constant body temperature. When an ectothermic animal is cold‚ its heart rate will lower. When the animal
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____________ of ____________ and ____________ on ____________ in Daphnia. (Length: not more than two pages of text in 12-point font‚ double-spaced; plus one page each for Table 1 and Figure 1.) Introduction: • Provide a few sentences of background information on the effects of these two drugs on heart rate in Daphnia or other animals (including humans). Cite the source(s) of your information‚ such as (Castle and Paulson 2010) for your laboratory manual. Also include the appropriate sources
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Heart rate investigation Research statement: To investigate‚ how diabetes affect a person’s heart rate during physical exercise. Background information: Heart rate : Heart rate is the number of time a persons heartbeats per unit of time‚ usually measured in BPM (beats per minute). Heart rate is measured by finding the pulse on body‚ usually taken from carotid artery‚ which supplies blood to the head and the neck and radial artery‚ which Is located on your wrist below your thumb
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The purpose of this lab was to find my and my fellow classmates resting heart rate and record it. There were seven people in the class and we all participated in this study. There are four places to check heart rate and they are in your wrist‚ the inside of your elbow‚ the side of your neck‚ or the top of your foot. Everyone used the wrist or their radial artery. We used our middle and index fingers to gently feel for the radial artery in each others pulse. I then counted the pulse for 10 seconds
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Heart Rate Research Question: Do different exercises have different effect on heart rate? Method: 1. Find test subject 2. Prepare for activity (stretching) 3. Take heart rate of subject before exercise 4. Record heart rate 5. Do sit ups for 2 mins 6. Time using stop watch 7. Record heart rate 8. Allow subject to rest (lower heart rate) 9. Begin next exercise 10. Jumping jacks for 2 mins 11. Time using stopwatch 12. Record heart rate 13. Allow subject to rest (lower heart rate) 14. Squats for
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Factors Affecting Heart Rate‚ Respiratory Rate‚ and Blood Pressure By Ann-Geyn PanganFor Michele MacKenieInvestigative Team:Biology 0993Nejat MuradOctober 14‚ 2014Jenn SakelariouIntroduction In class we studied circulatory system‚ especially the heart that plays a large part in human. We learned and analyzed its part and function in the body. The purpose of this experiment is to compare the readings of how the heart rate‚ respiratory rate and blood pressure respond to increasing levels of physical
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The Effect of Caffeine on Heart Rate Caffeine is made by plants as a way of getting rid of insects. Cocoa is produced in South America‚ coffee in Africa and tea is produced in Asia have all been used for a very long time to give us a little rush in order to keep us going. Now caffeine is also used as a flavour enhancer in cola and other soft drinks also it has medicinal uses in aspirin preparations and is found in weight-loss drugs and as a stimulant in normal people in everyday to
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