The effect of caffeine on the body.

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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.  The Oxyhaemoglobin goes into the cells of the body and respiration occurs.  Respiration produces energy by oxygen and glucose going into the body and energy, water and carbon dioxide coming out.  This is the word equation for Respiration.

Oxygen + Glucose        Energy + Carbon Dioxide + Water

    O2       + C6H12O6           Energy +         CO2         +  H2O

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Equipment

This is the equipment we will use.

  • Coca Cola
  • Non Caffeine Coca Cola
  • Red Bull
  • Plastic cup
  • Stop Clock

A Fair test

We will make this investigation fair by.

  • Drinking exactly the same amounts of each drink.
  • Make sure that it is the same person who is drinking the drinks.
  • After every drink sit still until your pulse is back to resting pulse rate which is 60-70 beats per minute (bpm).
  • Take at least five readings for each drink and we will take the readings every minute.

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