Biology EEI: Catalase & Liver
Contents
1.0 Abstract 2
2.0 Introduction 2
2.1 Aim 3
2.2 Hypothesis 4
3 Materials and Apparatus 4
4 Method 4
5.0 Results 5
6.0 Discussion 6
7.0 Conclusion 7
8.0 Appendix 8
9.0 Reference List 10
1.0 Abstract
Enzymes are catalysts to ensure homeostasis in the body [2]. Homeostasis is the tendency to maintain the internal environment [2]. Hydrogen peroxide is an oxidizing agent that can be decomposed by catalase [11], the liver is able to decompose hydrogen peroxide enzymatically because it contains catalase [12]. The reaction rate of an enzyme catalysed reaction under the effect of changes in temperature was tested in this experiment. It was hypothesised that the fastest reaction rate would occur a 37 degrees Celsius. Liver and hydrogen peroxide were placed into 4 different test tubes, all set in different temperatures: 0 degrees Celsius; room temperature (28 – 30 degrees Celsius); 37 degrees Celsius; and 100 degrees Celsius. The results occurred as predicted, on graph they formed a semi-circle like shape. The 37 degrees Celsius delivered the best result with the room heat giving a close comparison but the iced and boiling heat delivered minimal results. The results gathered were concurrent of the hypothesis.
2.0 Introduction
Homeostasis is the state of equilibrium in the body that maintains the internal environment [10]. Somatic and autonomic nervous systems ensure the body temperature and pH are kept at a stable level. The human body is very fragile and susceptible to fatal changes within the inner conditions. A slight change in body temperature could cause irreversible reactions, if the person’s temperature dropped below thirty degrees they would die immediately. Sensory receptors emit nerve impulses in order for the organism to detect changes in the internal environment [10]. The nervous system deals with heart rate to ensure the organs are delivered the appropriate amount of blood [13]. Enzymes are constantly working as catalysts to
1.0 Abstract 2
2.0 Introduction 2
2.1 Aim 3
2.2 Hypothesis 4
3 Materials and Apparatus 4
4 Method 4
5.0 Results 5
6.0 Discussion 6
7.0 Conclusion 7
8.0 Appendix 8
9.0 Reference List 10
1.0 Abstract
Enzymes are catalysts to ensure homeostasis in the body [2]. Homeostasis is the tendency to maintain the internal environment [2]. Hydrogen peroxide is an oxidizing agent that can be decomposed by catalase [11], the liver is able to decompose hydrogen peroxide enzymatically because it contains catalase [12]. The reaction rate of an enzyme catalysed reaction under the effect of changes in temperature was tested in this experiment. It was hypothesised that the fastest reaction rate would occur a 37 degrees Celsius. Liver and hydrogen peroxide were placed into 4 different test tubes, all set in different temperatures: 0 degrees Celsius; room temperature (28 – 30 degrees Celsius); 37 degrees Celsius; and 100 degrees Celsius. The results occurred as predicted, on graph they formed a semi-circle like shape. The 37 degrees Celsius delivered the best result with the room heat giving a close comparison but the iced and boiling heat delivered minimal results. The results gathered were concurrent of the hypothesis.
2.0 Introduction
Homeostasis is the state of equilibrium in the body that maintains the internal environment [10]. Somatic and autonomic nervous systems ensure the body temperature and pH are kept at a stable level. The human body is very fragile and susceptible to fatal changes within the inner conditions. A slight change in body temperature could cause irreversible reactions, if the person’s temperature dropped below thirty degrees they would die immediately. Sensory receptors emit nerve impulses in order for the organism to detect changes in the internal environment [10]. The nervous system deals with heart rate to ensure the organs are delivered the appropriate amount of blood [13]. Enzymes are constantly working as catalysts to