Enzymes!!!!!

Digestion involves breakdown:

}Carbohydrates                simple sugar

Protein                              amino acids

Fats                     fatty acids + glycerol

By the action of digestive enzymes

Small

Soluble

Diffusible  molecules

What are enzymes:

       Protein in nature( made of amino acids )

Biological catalysts

Catalyst is a substance that alter or speed up a chemical reaction  ,without itself being chemically changed at the end of the of reaction 

Characteristics of enzymes: 

Proteins made of amino acids

Catalysts ( they speed up chemical reactions & lower the activation energy )

Reusable (they remain unchanged after the reaction )

Specific ( there is a perfect enzyme for a certain substrate ) 

How do enzymes alter the rate of chemical reaction?

The energy needed to start a chemical reaction is called activation energy

Enzymes lower the activation energy required to start a chemical reaction

Factors that affect the activity of enzymes:

Temperature

PH

Enzyme/substrate concentration