Enzymes are chemical components and protein in nature. They are made by living cells. They are not consumed in reaction but they act as catalyst. They only speed up the chemical reaction.
Types of Enzymes: -
i) Some enzymes work within the cell and are called inter cellular enzymes.
ii) Some enzymes work within as well as out of the cell and are called extra
cellular enzymes.
Characteristics: -
i) All enzymes are protein in nature.
ii) They can by destroyed by heating.
iii) They act best in narrow temperature range.
iv) The act best in narrow range of acidity and alkalinity.
v) A particular enzyme forms the same end product.