• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The effect of caffeine on the body.

Extracts from this document...


Coca Cola Non Caffeine Coca Cola Red Bull Andrew Marshall 10 A 3 The effect of Caffeine on the body Introduction In this we will drink a variety of drinks, these will be Red Bull energy drink, Coca Cola and Non Caffeine Coca Cola. We will be doing this to see what happens to our heartbeat after drinking each one. Prediction I predict that the normal Coca Cola and the Red Bull energy drink will speed my heartbeat up quite a lot, but the Non Caffeine Coca Cola will not. This is because there is Caffeine in Coca Cola and Red Bull but not in the Non Caffeine Coca Cola. Caffeine is a stimulant that changes the way your body works. Caffeine is found in Tea, Coffee, Chocolate, Energy drinks and other drinks. My heartbeat will increase after drinking the first two drinks because after drinking Caffeine we need more oxygen in our body. To get this extra oxygen our heart needs pumps faster to pump the extra oxygen into the blood. We get energy from this because red blood cells are packed with Haemoglobin, and the oxygen in the blood binds with the Haemoglobin to produce Oxyhaemoglobin. ...read more.


Then my heart rate started to go all over the place as it increased then decreased then increased and so on between 60bpm and 80bpm. This was unusual as my heart rate should have kept on increasing throughout the 10 minutes. The repeat of Coke A was much better but still did not increase and increase as time went on. My heart rate started at 70bpm and during the 8 minutes of taking readings my heart rate stayed between 60bpm and 70bpm. This is quite good because I was a bit worried with the first one as it went quite wrong. I would probably have to do coke A again to get the right results. My results show that when I drank Coke B my heart rate started to increase until a certain point and then came down and stayed around that point until it jumped up again then back down to a constant position. When I repeated Coke B I got more of a smoother line just like a wave as it increased then decreased around 95bpm. My results show that when I drank Red Bull my heart rate stayed around the same point as it stayed between 85bpm and 95bpm. ...read more.


These results could be better because they could have increased or stay the same as my heart should have. If I wanted to get more accurate results I would have to do the experiment again. Anomalous results On Coke A I hade one major anomalous result and a couple just outside 10bpm off the line of best fit. The major anomalous result is between 50bpm and 60bpm out of the line of best fit. I think that this anomalous result is anomalous because it was the first pulse rate of the first drink of the first day of the experiment and the others were not as anomalous because I was not used to all of the coke until later on. Also I was a bit nervous before the experiment so that could have made the result anomalous and really high. I have some evidence to support my conclusion and you will find this evidence by looking at my graphs. This shows everything that I have said in my conclusion Improvements To improve the reliability of my results I shall. * Not drink anything before the experiment * Don't laugh during the experiment * Sit still after drinking the drinks * Time my pulse rate exactly to one minute. No more, no less ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Humans as Organisms section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Humans as Organisms essays

  1. The aim of the experiment is to find out the effect exercise has on ...

    * Intensity also because it is very difficult to measure intensity and it's not controllable. Readings * I am going to repeat the experiment three times as this will give accurate results as the first procedure my have done wrong i.e. Human error with readings of pulse, breathing rate etc.

  2. Daphnia are the organisms that are involved in this experiment to find out what ...

    Then, 10cm3 of the 1x10-3gcm-3 ethanol solution was transferred into another measuring cylinder using a 10cm3 syringe. Distilled water was used to make up the 1x10-4cm-3 ethanol solution by filling to the 100cm3 mark on the measuring cylinder. To make the final concentration of ethanol solution 10cm3 of the 1x10-4cm-3

  1. GSK, Innocent drinks, Imperial College and Fullers, an overview.

    There are also motorways close by so it wouldn't be hard for them to ship their products around. ADDRESS Innocent ltd, fruit towers, 1 the Goldhawk estate, bracken bury road, London, W6 0BA Fax: 020 8600 3940 Phone: 020 8600 3939 Company registration address: Innocent ltd, fruit towers, 3 the


    Apparatus - The following will be needed in order to carry out the experiment * Culture of daphnia to examine the dependant variable upon (heartbeats). * Micro-pipette to acquire the Daphnia. A small hole at the bottom of the pipette will ensure that only the right amount of Daphnia are acquired, as Daphnia are very small fragile creatures (about 3mm)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work