Introduction:. Homeostasis Is The Process Of Maintaining

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Homeostasis is the process of maintaining a fairly constant interval environment. Homeostatic mechanisms help us to be independent of our external environment. It helps us regulate our body temperature, pH, concentration of dissolved substance in the body fluids, concentration of glucose in blood, concentration of oxygen and carbon dioxide in the blood and body fluids, blood pressure and concentration of metabolic wastes. Without it, we wouldn’t be able to survive and adapt to our environment.
Homeostasis is vital for us humans. However, homeostasis imbalance can occur when cells in the body malfunction or experience a deficiency such as malnutrition (results from unhealthy diet) or when cells are exposed to toxins.
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(extra: By drinking caffeine beverages without sugar, our heart rate and oxygen level will increase a little but stay around the same because the caffeine will boost the heart and flow of oxygen. As for the caffeine beverages with sugar, the oxygen level and heart rate might increase highly because sugar is known to make you hyperactive. As for water, both heart rate and oxygen level might stay at a constant rate because we constantly need water and our 75% of our body is made of water, so it would be dangerous if change occurred too much, causing constant health problems. )

Independent variable: The level of caffeine has been controlled for each beverage.
For coca cola : caffeine for 225 ml : 21,6 mg (+ 22.32g of sugar) /For coca cola 0 : 21.1 caffeine for 220ml (no sugar) / For water: 0 /For instant coffee : around 1,2mg ( 1 table spoon so around 5g ) /For tea: 0.9 mg( 1 table spoon so around 5g )

Dependent variable: The variable that we couldn’t control was heart rate and oxygen saturation.

Controlled variables:
 Caffeine tolerance – Some of the people testing had different tolerance to caffeine. For example, Monisha drink coffee every morning, her body therefore adapted to caffeine and she a higher tolerance of caffeine. In comparison, Elise, never drink or at very rare occasion caffeinated beverages which gives her a lower tolerance for caffeine.
 What you
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