Question

How do enzymes speed up chemical reaction?

Answer 1

Enzymes speed up chemical reactions by providing a lower activation energy barrier for the reaction to occur.

Lower activation barrier means that less energy is required for the reaction to proceed, which in turn increases the rate at which the reaction occurs. Enzymes work by binding to the reactants of a reaction in a specific way, forming an enzyme-substrate complex. This binding causes a structural change in the enzyme or substrate, which reduces the activation energy needed for the reaction to occur.

The active site of the enzyme is where the chemical reaction takes place. This active site contains amino acid residues that help to stabilize the transition state of the reaction, which is the point at which the reactants are converted into products.

Enzymes can also increase the rate of reaction by increasing the concentration of the reactants at the active site of the enzyme, increasing the collision frequency of the reactants, and increasing the local pH, temperature, and pressure.

Enzymes are essential for many biochemical reactions that take place in our cells and are vital for life. Without enzymes, many metabolic processes would be too slow to sustain life and the rate of chemical reactions would be drastically reduced.

Learn more about the functions of enzymes:

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Answer 2

In the human body, enzymes function as catalysts to speed up reactions by helping to lower the activation energy needed to start a reaction.

Although some RNA molecules can also act as enzymes, proteins constitute the vast majority of enzymes.

The primary function of enzymes is to decrease the activation energy, or the energy required for a process to start. Enzymes bind to reactant molecules and hold them in place to enable the chemical bond-forming and bond-breaking processes.

The energy of the transition state, which products must pass through in order to become reactants, is reduced by enzymes. 

Instead of using energy to move till they collide at random, they might group the reactants together to make it easier for them to interact. They could direct the process along a different pathway with lower activation energy.

By tying them to the active site, they might place the reactants correctly. As a result, the reactants can interact with less energy because they won't have to fight against intermolecular forces that would normally try to separate them.

Temperature, ionic circumstances, and environmental pH all have an impact on how quickly an enzyme.

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