What is the Difference Between Catalyst and Enzyme?

🆚 Go to Comparative Table 🆚

The main difference between a catalyst and an enzyme lies in their nature and properties. Here is a comparison of the two:

  • Nature: Enzymes are organic biocatalysts, made up of high molecular weight globular proteins, while catalysts can be either inorganic or organic compounds.
  • Reaction Rates: Enzyme reaction rates are typically several times faster than those of non-enzymatic catalysts.
  • Specificity: Enzymes are highly specific, producing large amounts of good residues, while catalysts are not specific and may produce residues with errors.
  • Conditions: Enzymes function under mild conditions, such as physiological pH and temperature, while catalysts may require high temperatures and pressures.
  • C-C and C-H Bonds: Enzymes have C-C and C-H bonds, while catalysts do not.
  • Types: There are two types of enzymes - activation enzymes and inhibitory enzymes. Catalysts can be classified into two types - positive and negative catalysts.

Examples of enzymes include lipase and amylase, while an example of a catalyst is vanadium oxide. Both catalysts and enzymes increase the rate of chemical reactions without being consumed in the reactions themselves.

Comparative Table: Catalyst vs Enzyme

Here is a table comparing the differences between catalysts and enzymes:

Catalyst Enzyme
High temp, pressure Mild conditions, physiological pH and temperature
Inorganic catalyst Organic catalyst or bio catalyst
Typically slower reaction rates Several times faster reaction rates
Not specific, may produce residues with errors Highly specific, producing large amounts of good residues
C-C and C-H bonds are absent C-C and C-H bonds are present
Examples include vanadium oxide Examples include amylase and lipase

Both catalysts and enzymes lower the activation energy of a reaction, thereby increasing its rate. However, catalysts can be either inorganic compounds or transitional elements, while enzymes are organic, protein-based catalysts specifically found in biological systems. Additionally, enzymes are highly specific in their action, whereas catalysts are not.