Final answer:
Enzymes play a vital role in cells by speeding up chemical reactions through the reduction of activation energy.
Step-by-step explanation:
An enzyme is a type of protein that plays a crucial role in a cell by speeding up chemical reactions. It does this by lowering the activation energy, which is the energy needed for a reaction to occur. By reducing the amount of energy required, enzymes allow reactions to happen more quickly and efficiently.
For example, the enzyme amylase helps to break down starch into sugars during the digestion process. Without amylase, this reaction would occur too slowly to provide the body with the energy it needs.
In summary, enzymes are essential in cells as they act as catalysts, accelerating chemical reactions and enabling them to occur at a suitable rate.
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