What is enzyem?

Answer 1

Do you mean Enzyme?

Enzymes are proteins that participate in cellular metabolic processes with the ability to enhance the rate of reaction between biomolecules. Some enzymes can even reverse a reaction from the direction it would normally take, by reducing the activation energy (Ea) to the extent that the reaction favours the reverse direction. Simlarly, enzymes can catalyze reactions that might not otherwise occur, by lowering the Ea to a more "affordable" level for the cell.

Enzymes can be isolated using various protein purification methods. The purity of an enzyme preparation is measured by determining it's specific activity

Answer 2

An enzyme is a biological molecule, typically a protein, that speeds up chemical reactions in living organisms. They act as catalysts by lowering the activation energy required for a reaction to occur. Enzymes are highly specific to the substrates they bind to and the reactions they catalyze.