Formation of an enzyme-substrate complex increases the rate of reaction - AQA - A-Level Biology - Question 4 - 2018 - Paper 1
Question 4
Formation of an enzyme-substrate complex increases the rate of reaction.
Explain how.
Worked Solution & Example Answer:Formation of an enzyme-substrate complex increases the rate of reaction - AQA - A-Level Biology - Question 4 - 2018 - Paper 1
Step 1
Reduces activation energy
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Answer
The formation of an enzyme-substrate complex lowers the activation energy required for the reaction to proceed. This occurs because the enzyme strains specific bonds within the substrate, making it more susceptible to conversion into products.
Step 2
Due to bending bonds
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Answer
The interaction between the enzyme and substrate alters the tertiary structure of the enzyme, leading to the bending of bonds in the substrate. This mechanical stress facilitates the breaking of bonds in the substrate, which contributes to an increase in the reaction rate.
