A Model for Catalytic Interactions | Catalyst Simulation

Biology | Biochemistry

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General Aim of Catalyst Simulation

To demonstrate the importance of the presence of enzymes in biochemical reactions, showing their absence may lead to slowing down the rate of these reactions or even preventing them from taking place.

 

Method of Catalyst Simulation

The concept is explained through catalyst simulation by studying the effect of an acidic medium inside the stomach (represented by seven up here) on food (represented by biscuits). Then, the digestion of food (biscuits) is monitored in order to understand the necessity of the digestive enzymes for the vital process inside living organisms.

Learning Objectives (ILOs)

  • The answer to the investigative questions during the catalyst simulation:

  • Why do biochemical reactions require catalysts?
  • What are the expected results of the catalytic chemical reactions in the absence of enzymes, in terms of speeding up or slowing down the rate of the reactions or even their occurrence during the catalyst simulation?

Theoretical Background/Context

  • Millions of chemical reactions take place during daily life processes every second. 
  • Interestingly, enzymes act as vital catalysts that could speed up the chemical reactions by thousands or even millions of times.
  • In the absence of these enzymes, some biochemical reactions inside living organisms might happen at a very slow rate, while others would not have taken place at normal temperatures.
  • For example, the digestion process aims to break down or digest foods represented in this catalyst simulation experiment by biscuits by the action of stomach acid represented here by soft drinks such as Seven-Up.

Principle of Work

  • The presence of digestive enzymes greatly speeds up the process (catalytic reaction) and this is what happens in normal cases in the daily digestion process. 
  • In the absence of these, as we will see in catalyst simulation, digestion may not occur at all or occur at a very slow rate that may exceed 24 hours.

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